Answer:
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Explanation:
describe the relationship between the mass of the ice and the transfer of thermal energy in the investigation. Use evidence and scientific reasoning to support your answer. (Use the following words: Molecules, Kinetic Energy, and Heat.
PLEASE HELP
Answer:
Explanation: 1234456
pls help me with this pls don't just come to my question with out answering the questions
True or False. The elements that make up the reactants must be present in the products.
Answer:
In a chemical reaction, the atoms and molecules that interact with each other are called reactants. In a chemical reaction, the atoms and molecules produced by the reaction are called products. In a chemical reaction, only the atoms present in the reactants can end up in the products.
Explanation:
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Jim thinks that he can throw a baseball six meters per second. What does the six meters refer to? (2 points)
a
The speed the baseball travels in six seconds.
b
The distance the baseball travels in one second.
c
The distance the baseball travels in six seconds.
d
The time it takes the baseball to travel one meter.
An element can be separated into simpler substances by
a. physical means
b. chemical means
c. both physical and chemical means
d. neither physical nor chemical means
Use the information and data from the tests to make a recommendation for which blanket the government should choose. In your response include scientific reasoning to support your recommendation.
Reasoning: Explain using scientific principles and connect the test results to the criteria and constraints.
Answer:
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help quick............
Atomic number: 42
Chemical symbol: Molybdenum (Mo)
Number of protons: 96
Atomic mass: 96
Number of electrons: 42
Number of valence electrons: 5
Number of electrons in the n=3 shell: 42
Number of neutrons: 54
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Answer:
True is my answer
#Carry on learning#:)
Answer:
True
Explanation:
Bc u said it already the answer
“name each season from the diagram above.” PLEASE HELP I WASNT AT SCHOOL.
Answer:
to be honest I don't know
Explanation:
Answer:
A- Summer E- Winter
B- Spring F- Fall
C- Winter G- Summer
D- Autumn/Fall H- Spring
Explanation:
*WARNING* I don't know for a fact but i think this is the answer
pls help me…………………..
Answer:
Potential,Kinetic
Explanation:
When an object is higher up on a surface it has more Gravitational Potential Energy whilst when an object is lower down but moving fast it has more kinetic energy. So when the object moves down the ramp energy is transferred from the gravitational potential energy store to the kinetic energy store.
Try to make it that force of friction is so much that the object's cannot be accelerated.
How can you do this?
Answer:
high gravity I hope it helps ️
Explanation:
High gravity mean's high fraction
Part A
Describe the type of change in matter that occurred in thisinvestigation and provide evidence to support your response.
Part B
Describe a chemical property of baking soda.
Part C
Explain how the results of the investigation support the Law of Conservation of Matter.
Part D
Provide a brief explanation whythe investigation measurements differed.
Answer:
part b:
Sodium bicarbonate is a white, crystalline powder that sometimes forms lumps. It is odorless and has a bitter, salty taste. At room temperature, it is a solid. Solubility, or the ability of a substance to dissolve in water, is also a physical property. Sodium bicarbonate is soluble in water and can be separated from water through evaporation.
Explanation:
In the reaction of baking soda with acetic acid carbon dioxide gas is evolved that's why the balloon inflates. The mass in the product side and reactant side ar equal and the the total mass is conserved.
What is mass conservation?According law of conservation of mass, mass can neither be created nor be destroyed. Therefore, the total mass of a system will be conserved. In a chemical reaction, the total mass of reactants is equal to the total mass of products and thus no mass loss occur there.
In the reaction of vinegar (acetic acid) and sodium bicarbonate or baking soda, the mass on both side is equal and we get the product mass equal to the total mass of reactants if the experiment is carefully done.
Sodium carbonate is a colourless weak base, which can easily react with an acid and gets protonated. When sodium bicarbonate that is NaHCO₃, with vinegar CH₃COOH, it will produce carbon dioxide and water.
This carbon dioxide gas evolves to the balloon which is stretched on the top and the balloon will inflates.The measurements will differ at each moment because we are measuring it in different events of the reaction where the gas is evolving out.
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How do planets with larger masses apply greater gravitational forces on objects compared to planets with less mass?
Answer:
more massive objects will attract each other with a greater gravitational force. So as the mass of either object increases, the force of gravitational attraction between them also increases.
PLS ANSWER ASAP
Global winds affect weather patterns around the world. What are the names of the three types of global winds shown in the diagram?
A) A are polar easterly winds B are trade winds, and C are gulf winds.
B) A are north winds, B are prevailing westerly winds, and C are polar easterly winds.
C) A are north winds, B are west winds, and C are east winds.
D) A are polar easterly winds, B are prevailing westerly winds, and C are trade winds.
Answer:
answer is C!!
Explanation:
Brainliets and a lot of points to ever answers all questions and get all right
1.What are the 2 types of cells (not plant and animal)? Describe each type.
2.Are you made of prokaryotic or eukaryotic cells? Explain why you chose your answer.
3.Are bacteria prokaryotic or eukaryotic? Explain why you chose your answer.
4.What parts do all cells have in common? List at least 2.
Label the numbered parts of the cell:
pic downloaded below
8. __________________
9. _________________
12. Using the onion cell diagram above, which organelle is responsible for the greenish color?
13. Which organelle is the red arrow pointing towards?
14. Both plant and animal cells contain mitochondrion however they are not in equal amounts.
Between the cheek and onion cells, which one do you think would contains the greater amount of mitochondrion and
why?
15. Compare in your own words, at least 2 differences in plant and animal cells.
16. Why does a plant cell need a larger vacuole?
17. Animal cell do not have chloroplasts. Why not?
18. What are the 3 components of the cell theory? Put in your own words.
19. Choose one part of the Cell Theory and describe an experiment you could do that would give evidence to support your claim.
20. How can a microscopic paramecium and a large giraffe both be described by the cell theory?
when enough stress builds up in brittle rock, the rock breaks, causing a ___ to form
How do faults form? When enough stress builds up in rock then the rock breaks creating a fault. A normal fault occurs when rock is being pulled apart by tension; in this type of fault the hanging wall moves downward and the foot wall moves upward due to the tension in Earth's crust.
In many environments, the temperature of the ground and the air right above the ground are both very similar in the middle of the night. Engineers have proposed developing a portable pop-up hammock that would allow people to sleep suspended in the air above the ground in emergencies. It will take time and money to develop a really lightweight, easy to collapse, low cost design. Before they invest the resources to do this, explain whether what you learned about energy transfer makes this an idea worth pursuing. Would suspending a person in a hammock, wrapped in one of the blankets you chose above, decrease the amount of temperature change compared to sleeping directly on the ground with one of these blankets? Explain.
Answer:
yes i think so
Explanation:
Hammock is a good idea to reduce the effect of cold in night. It is more better than sleeping directly on the ground with one of these blankets, because, the heat will transfer from us to the cool ground which make us more cool.
What is heat transfer?Heat is able to transfer from the hotter region to colder region based on the temperature gradient. The temperature gradient occurs from the difference in heat radiated in each regions.
The convection current in air occurs due to this temperature gradient. During winter seasons, the colder grounds can absorbs the heat from our body and make us cool. Thus, contact with the ground in colder nights make us more cool.
The same advantage of air circulation around your body on warm nights is provided by a nylon hammock. Additionally, a cozy under blanket (like this one from Cedar Ridge or this one from Little Shop of Hammocks) will keep your backside warm when the weather drops.
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A dog whistle has a high frequency. What can you infer about the dog whistle?
It would be very loud.
It would have a high pitch.
It would have a high amplitude.
It would have a long wavelength.
Answer: It would have a high pitch.
Explanation: since the whistle has a high frequency, I can infer that it will have a high pitch.
Answer:
it would have a high pitch
Explanation:
like if u take a hearing test the sounds are usually high pitch
What is a characteristic of hardness in science?
Answer:
The ability to resist being scratched—or hardness—is one of the most useful properties for identifying minerals. Hardness is determined by the ability of one mineral to scratch another.
The ability to resist being scratched or hardness is one of the most useful properties for identifying minerals.
Which option correctly describes the pattern of valence electrons on the periodic table?
O The number of valence electrons increases from right to left
O The number of valence electrons increases from bottom to top.
O The number of valence electrons increases from top to bottom
O The number of valence electrons increases from left to right.
Answer:
O The number of valence electrons increases from left to right.
Explanation:
In general, the number of valence electrons is the same within a column/group. When the group number increases, the # of valence electrons also increases.
The option correctly describes the pattern of valence electrons on the periodic table is the number of valence electrons increases from left to right. Thus, option D is correct.
What is atomic mass?In universe every particle have some mass associated with it whether it is small or large. According to Dalton's theory of atomic structure every particle is made up of with atoms. The average mass of atomic particle is called as atomic mass. This is commonly calculated as per international agreement in terms of a unified atomic mass (amu).
It can also be defined as 1/12 of the mass of a carbon atom-12 in its ground state. The mass of atom can also be calculated as the mass of protons and neutrons which almost equal to atomic mass. This small change is due to the binding energy mass loss.
Calculation:-
As per given above question:-
99% H-1
0.8% H-2
0.2% H-3
So,
Atomic mass = (99x1 + 0.8x2 + 0.2x3)÷100%
Atomic mass = 1 amu,
Therefore, The option correctly describes the pattern of valence electrons on the periodic table is the number of valence electrons increases from left to right. Thus, option D is correct.
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Throughout the investigation the ice begins to melt. This is because the thermal energy of the water ___while the thermal energy of the ice ____, causing it to melt.
First Blank: decreases
Second Blank: Increases
Why do you see lightning before you hear the thunder?
The rain in the air slows the sound waves down.
Light travels faster than sound through the air.
The thunder has to reflect off the ground first.
The lightning is closer to the ground than the thunder.
B,speedof light>speed of sound
How does the initial mass of the candle compare with the final mass? Does this violate the Law of Conservation of Mass? Explain your reasoning.