water evaporates and becomes a gas when from the sun
Answers
Answer:
water vapour
Explanation:
water vapour condents to water/rain
Related Questions
A student wants to know how the number of geese in a study area affects the number of parts in their songs. She performs an experiment and records the data in a table.
Which two terms describe this type of data?
A.
Quantitative
B.
Empirical
C.
Theoretical
D.
Qualitative
Answers
The two terms that describe this type of data are Quantitative and Qualitative. Therefore, the correct options are A and D.
Data that can be measured and expressed numerically, denoting quantities or amounts, is called quantitative data. In this example, the number of geese is counted and correlated with the number of pieces in their symphony. Instead of being numerical, descriptive and categorical data are called qualitative data. In this example, it is observed and noted how many sections are in the swan songs (descriptive categories).
Therefore, the correct options are A and D.
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Scientists can use many strategies during investigations, including heldwork, surveys,
models, and experiments. Which of these phrases best describes an experiment?
A mathematical analysis of data
B. observation of animals in their natural world
Ci collection of data from an uncontrolled environment for comparative purposes
D. procedure with controlled conditions and test and outcome variables
Answers
Answer:
D
Explanation:
Question: Scientists can use many strategies during investigations, including heldwork, surveys,
models, and experiments. Which of these phrases best describes an experiment?
A mathematical analysis of data
B. observation of animals in their natural world
Ci collection of data from an uncontrolled environment for comparative purposes
D. procedure with controlled conditions and test and outcome variables
G
A substance occupies one half of an open container. The atoms of the substance are closely packed but are still
able to slide past each other.
What is most likely the phase of the substance?
gas
liquid
solid and gas
O liquid and solid
Mark this and return
Save and Exit
Next
Submit
Answers
Answer:
Solid and gas
Explanation:
What is NOT true about genes and chromosomes?
Genese are located on chromosomes
Chromosomes are in the nucleus
A single chromosome can contain hundreds of genes
All of these are true
Answers
Let us go option by option :
1) Genes are located in chromosomes. TRUE
Chromosomes are in cell nucleus. A chromosome contains hundreds and thousands of genes. A normal have 23 pairs of chromosomes, and a total of 46.
2) Chromosomes are the in nucleus.
TRUE
Chromosome is structure found in nucleus of the cell. It is made up of protein and DNA.
3) A single Chromosome can contain hundreds of genes.
TRUE
single Chromosome can contain hundreds of tgenes.
4) All of the above
TRUE
As all the statements above are true. The correct option is 4.
Answer:
all of them are true
Explanation:
this is because chromosomes contain genetic materials and it is present in the nucleus.
Therefore, the correct option is 4) all of these are true
no problem
HELP ASAP!! An experiment is performed in which a crystalline substance is added to a beaker filled with room-temperature water. The following observations were made:
1. The crystals dissolve.
2. A precipitate forms.
3. The bottom of the beaker feels warm to the touch.
4. Bubbles begin to form in the water.
Which observations are evidence that a chemical reaction took place?
Answers
Answer:
observations (2), (3), and (4) provide strong evidence that a chemical reaction occurred.
Explanation:
Observations (2), (3), and (4) are evidence of a chemical reaction because a precipitate formed, energy was released (the bottom of the beaker felt warm), and bubbles were formed in the water. Observation (1) indicates a physical change, not a chemical reaction.
check all the examples below that represent a physical property of matter
Answers
Answer:
A physical property is a characteristic of matter that is not associated with a change in its chemical composition.
The change of one type of mater into another type is a chemical property flammability, acidity, toxicity, reactivity, and heat of combustion are some examples of chemical properties.
(I know this doesn't fully match what you're asking, but this might help!)
Please rate, heart, and give brainliest :)
Answer:
A physical property is a characteristic of matter that is not associated with a change in its chemical composition.
The change of one type of mater into another type is a chemical property flammability, acidity, toxicity, reactivity, and heat of combustion are some examples of chemical properties.
Explanation:
Can you help me please
Answers
Answer:
D
Explanation:
DDDDD
When we rewrite the given in a simpler unit we have 7.9 ms-1.
What is dimensional analysis of formulas?By looking at the units of the quantities involved, dimensional analysis is a technique for determining whether a physical equation or formula is right. The essential tenet of dimensional analysis is that the quantities being multiplied or divided in the equation must have units that are equal to the units of the final result.
We know that we have to apply the principles that apply to dimensional analysis in the question and we have that;
m^2.s/m.s^2
= ms-1
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Match each letter with the correct label. Use the atom diagram below.
Electron - Nucleus - Proton - Neutron
Answers
C= protons
B= neutron
A= electron
Answer:
Explanation: First and foremost, we must carefully examine the provided diagram in order to properly name the sections of an atom diagram.
Step-by-step instructions are given along with the answers in sequential sequence.
Correct answer for (A) is Electron since they are present at the outermost shell of an atom.The correct answer for (B) is Neutron since it is the central element of an atom.The proton is the right answer for (C), as it is included in the nucleus grouping with the neutron.The nucleus is the correct option for (D) since it is the primary component of the atom and includes both protons and neutrons.Learn more about the Atom here:
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Which of the following points is/are true for plasma?
(1) It is a very good conductor of electricity.
(2) Gas is transformed into plasma state.
(3) It is influenced by magnetic and electric fields.
(4) All of the choices
Answers
Answer:
4 all of the choices. the rest of the answers are correct so it's all of the choices
The two insulated beakers shown contain equal amounts of identical liquids. The temperature of Beaker A is 85°C. The temperature of Beaker B is 40°C. A metal rod connects the beakers. Five minutes later, the temperature of Beaker A is 75°C and the temperature of Beaker B is 50°C. What might the temperatures be after another five minutes have passed?
Answers
Temp. of Beaker A = 68°C, Temp. of Beaker B = 57°C
I think this is right srry if its not :]
How to work out the relative mass of potassium? What is the calculation? ( explained very easily )
Answers
Answer:
39
Explanation:
Relative mass does not need to be calculated as it is listed on the periodic table. Potassium's relative atomic mass is around 39.
———————————
(1/12)th Mass of one C12 atom
WARNING (It's actually 8th grade science but it's not on here...)
The periodic table is organized into groups and periods of elements. The characteristics of a certain group of elements are listed below. Which of these elements is in this group?
Characteristics of a group of elements
•It's shiny
•It's a solid at room temperature
• It has atoms with 2 valence electrons
Answer Choices
A. Lithium
B. Strontium
C. Aluminum
D. Silicon
Answers
Use the picture to fill in the blanks for the following statement. One ____ of the element carbon combines with one ______ of the element oxygen to form one________ of the compound carbon dioxide.
Answers
Answer:
atom, atom, molecule.
Explanation:
i am not so sure about the answer
Identify the molecule that is a carbohydrate.
propylene
methane
poly-saccharide
lipid
NEED HELP ASAP!!!
Answers
i just answered the same question
What is coevolution? *
A. When two species evolve in response to each other
B. When 2 sub group of the same species evolve at the same time
C. When the environment and the animals within the environment evolve at the same time
Answers
Answer:C
Explanation:
Hope this helped and have a nice day :)
When the speed of the bottle is 2 m/s, the KE is kg m2/s2. When the speed of the bottle is 3 m/s, the KE is kg m2/s2. When the speed of the bottle is 4 m/s, the KE is kg m2/s2. When the speed of the bottle is 5 m/s, the KE is kg m2/s2. When the speed of the bottle is 6 m/s, the KE is kg m2/s2.
instructions
In this part of the experiment, you will be changing the speed of the bottle by dropping it from different heights. You will use the same mass, 0.250 kg, for each trial, so record this mass in Table B for each velocity. Then, calculate the expected kinetic energy (KE) at each velocity. Use the formula KE = mv2,
where m is the mass and v is the speed. Record your calculations in Table B of your Student Guide.
Answers
Answer:
Based on the given instructions, you need to calculate the expected kinetic energy (KE) at each velocity using the formula KE = mv^2, where m is the mass and v is the speed. The mass is given as 0.250 kg.
Table B: Calculation of Kinetic Energy (KE)
Table B: Calculation of Kinetic Energy (KE)
Speed (m/s)Mass (kg)KE (kg m^2/s^2)20.2500.50030.2500.75040.2501.00050.2501.25060.2501.500
To calculate the kinetic energy at each velocity, multiply the mass (0.250 kg) by the square of the velocity.
For example, when the speed of the bottle is 2 m/s: KE = (0.250 kg) * (2 m/s)^2 = 0.250 kg * 4 m^2/s^2 = 1.000 kg m^2/s^2
Perform similar calculations for the other velocities and record the results in Table B.
Answer:
Explanation:mass of the bottle in each case is M = 0.250 kg
now as per given speeds we can use the formula of kinetic energy to find it
1) when speed is 2 m/s
kinetic energy is given as
2) when speed is 3 m/s
kinetic energy is given as
3) when speed is 4 m/s
kinetic energy is given as
4) when speed is 5 m/s
kinetic energy is given as
5) when speed is 6 m/s
kinetic energy is given as
Whoever answers first gets brainlist
Answers
Why does a plant need six
molecules of carbon dioxide and
six molecules of water to
produce one molecule of
glucose?
Answers
Answer:
For each molecule of glucose produced: 6 water water molecules are oxidized, and become the source of electrons for carbon dioxide reduction. 6 molecules of carbon dioxide are required, one for each carbon atom in glucose. 6 molecules of oxygen are produced as a by product of water oxidation
Explanation:
Look it up
Why is it easier for most metal elements to gain electrons rather than to lose them?
PROPER EXPLANATION
Answers
Because it is easier for metals to shed their valence electrons and form cations for a stable configuration, they have comparatively few chances of acquiring electrons.
The metals usually complete their octet in each reaction. The outermost electron shell often contains more electrons in metals. Metal atoms lose electrons when they interact with other non-metals because the energy of an electron in its outermost shell is very weak.
Metals often have low ionization energy because their electrons are positive in nature. Metals lose their electrons and trade them with non-metals to achieve a stable configuration.
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Answer:
metals typically have relatively low ionization energies
Explanation:
Which statement describes the role of consumers in an ecosystem?
A.
Consumers make their own food.
B.
Consumers eat only decomposers.
C.
Consumers provide food for producers.
D.
Consumers provide food for other consumers.
Answers
!! HELP WORTH 15 POINTS !!
How is the form of energy being changed when a student uses an electric sharpener to sharpen a pencil?
from mechanical to electrical
from electrical to mechanical
from thermal to mechanical
from magnetic to electrical
Answers
Answer:
B
Explanation:
Because the sharpener is attached to an electrical outlet
When a student uses an electric sharpener to sharpen a pencil then from electrical energy to mechanical energy. Therefore, option (B) is correct.
What is mechanical energy?Mechanical energy can be defined as the addition of kinetic energy and potential energy that is used to perform work. The total mechanical energy is conserved when the forces performing work are conservative in nature.
The principle of conservation of mechanical energy can be described as when an isolated system is under the influence of conservative forces, then the mechanical energy is constant. If a body moves in the opposite direction of a net force, the potential energy will increase and the speed of the object changes, the kinetic energy also changes.
Many devices are used to transform mechanical energy to or from other forms of energy, such as an electric motor converts electrical energy to mechanical energy,
An electric sharpener converts mechanical energy into electrical energy. Therefore, option (B) is correct.
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Consider the reaction 2Al(OH)3(s)→Al2O3(s)+3H2O(l) with enthalpy of reaction ΔHrxn∘=21.0kJ/mol What is the enthalpy of formation of Al2O3(s)?
Answers
The enthalpy of formation of the solid Al2O3(s) is -1675.6 kJ/mol .
Using the relation;
ΔH°rxn = ∑ΔH°fproducts - ∑ΔH°freactants
We know that;
ΔH°f H2O(l) = -285.8 kJ/mol
ΔH°fAl(OH)3(s) = -1315 kJ/mol
ΔH°fAl2O3(s) = ?
Substituting values;
21.0kJ/mol =[ (ΔH°fAl2O3(s) ) + 3( -285.8 kJ/mol)] - 2 ( −1277kJ/mol)
21.0kJ/mol = (ΔH°fAl2O3(s) ) + 1696.6 kJ/mol
ΔH°fAl2O3(s) = 21.0kJ/mol - 1696.6 kJ/mol
ΔH°fAl2O3(s) = -1675.6 kJ/mol
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Which statement best describes properties of elements? A) All elements have a similar structure and hardness. B) All elements are either metals or gases. C) All elements are solid and magnetic. D) All elements have mass and occupy space
Answers
Answer:
D
Explanation:
That is the right answer
Why does sound travel at different speeds through various materials?
Answers
Answer:
It is easier for sound waves to go through solids than through liquids because the molecules are closer together and more tightly bonded in solids.
Explanation:
Only about half of the Sun’s energy that reaches Earth is absorbed. The rest is reflected back into space. Which surface is LEAST likely to absorb solar energy and why?
Select one:
a. rock, because it is solid
b. snow, because it is white
c. water, because it is liquid
d. asphalt, because it is black
Answers
Answer:
SNOW
Explanation:
It can melt, not a solid, not dark colored, does not move constantly
haii i hope your doing great!
i need helpp:)
Answers
!let me know if I'm wrong bc im a little rusty!
The image is a model of sulfuric acid that has a chemical formula of H2SO4. In 1-2 sentences, explain why creating models, like the one shown in the image above, is important in understanding substances.
(2 points)
Answers
Answer: Creating models is important for a better understanding of the chemical composition of the substances.
Explanation:
The three models of the substances are useful in understanding the molecular composition of the substance and the arrangement of the elements. Even chemical reactions can be explained and understood using these models.
Which three temperature readings all mean the same thing?
273 Kelvin, 100 degrees Celsius, 212 degrees Fahrenheit
100 Kelvin, 0 degrees Celsius, 32 degrees Fahrenheit
273 Kelvin, 0 degrees Celsius, 212 degrees Fahrenheit
373 Kelvin, 100 degrees Celsius, 212 degrees Fahrenheit
Someone please help!
Answers
Answer:
273 Kelvin, 0 degrees Celsius, 32 degrees Fahrenheit
Explanation:
What is an ellipse please help)
Answers
In mathematics, an ellipse is a plane curve surrounding two focal points, such that for all points on the curve, the sum of the two distances to the focal points is a constant. As such, it generalizes a circle, which is the special type of ellipse in which the two focal points are the same.
Maybe they might use that math thing for Science.
What landscape feature contributes to the dryness of deserts?
A. The open, flat areas of a desert prevent clouds from forming.
B. Desert canyons collect all water and funnel it out of the desert.
C. Desert lakes absorb all the water.
D. Mountains block the winds that bring rain clouds.
Answers
Answer:
As I'm Not % Sure I Can Say C & D don't seem Right, Leaving A & B Having Me to Think the Answer is A (Hope I'm Right Good-Luck)
Explanation:
Answer: Mountains block the winds that bring rain clouds.
Explanation: By acting as obstacles to the flow of air masses, mountains contribute significantly to the dryness of deserts. Orographic lifting is a process that occurs when moist air is forced to ascend as it approaches a mountain range. The moisture in the air condenses and forms clouds as the air cools as it climbs. As a result, on the windward side of the mountains, the air loses a lot of its moisture as precipitation. The air has already lost a significant amount of moisture by the time it reaches the leeward side of the mountains, creating a rain shadow effect. On the leeward side of the mountains, this impact results in a dryer area that is often a desert. Consequently, the existence of mountains influences