The melting point for a substance will be the same temperature as its


boiling point

sublimation point

condensation point

freezing point

Answer:

freezing point

Explanation:

melting point is what temperature a solid turns into a liquid,

freezing point is what temperature a liquid turns into a solid

Ascientist is measuring the pressure that is exerted by each of the following gases in the atmosphere: carbon dioxide, oxygen,
and nitrogen. Which term most likely describes what she is measuring?
final pressure
atmospheric pressure
combined pressure
partial pressure

Select the correct answer from the list.

1: The (gravity, electromagnetic radiation) of dark matter causes baryonic gas and dust to (break apart, clump together).

The eye symbol represents Which hazards

Which statement explains the difference in chloroplasts between the two types of plant cells?
A.
The leaf cells have larger chloroplasts because leaf cells need more support and a stronger structure.
B.
The root cells have smaller chloroplasts because root cells do not need to store food and water.
C.
Unlike the leaf cells, the root cells have no chloroplasts because root cells do not need to produce or use energy.
D.
Unlike the root cells, the leaf cells have many chloroplasts because leaf cells produce sugars for the plant.

I need help quickly, this assignment is due in a few hours. I have a few 8th grade science questions I need help with. These is not need to explain your answer, just tell me if the answer is a,b, or c. Also, please answer all of the questions listed not just some of them. I will be giving 20 points if you answer, and brainly to the first person to answer. The questions look really complicated but it is mainly just a long description. The questions themselves seem simple.

QUESTION ONE : Miranda was learning to bake bread at home. Her first few batches of dough did not rise, or expand, as much as they should have. Miranda's mother noted that the kitchen was cold and suggested that the dough might not be warm enough to rise. Miranda decided to test her mother's suggestion. She made a large batch of dough and divided it into six equal-sized balls. Then, she put each ball into a bowl. She left three bowls on the counter in the kitchen, where the temperature was 63oF. She left the other three bowls on her desk in her upstairs bedroom, where the temperature was 80F. After one hour, Miranda measured the size of each dough ball.

Which of the following was the dependent variable in the experiment?
a. the temperature where the dough was left to rise
b. the ingredients used to make the dough
c. the size of each dough ball

QUESTION TWO: Jada liked to make guacamole, but she could often find only unripe avocados at the grocery store. In biology class, Jada learned that ripe fruits produce a gas called ethylene that can cause other fruits to ripen. Jada wondered whether storing ripe bananas with unripe avocados would make the avocados ripen faster. Jada prepared four paper bags with five unripe avocados in each bag. She added on ripe banana to two of the bags. Then, Jada sealed all four bags. After three days, she opened each bag and counted the number of ripe avocados in each bag.

Which of the following was the independent variable in this experiment?
a. the type of paper bag used
b. the number of bags with a ripe banana
c. the number of ripe avocados

QUESTION THREE: Colette was using steel to make rusted sculptures. After building each sculpture, she caused the steel in the sculpture to rust by placing it into tub filled with salt water for eight hours. Colette wondered if steel would rust faster submerged in vinegar instead of salt water. To find out, Colette cut ten squares of steel sheet metal and split them into two equal groups. She put one group of squares into a tub filled with salt water and the other group of squares into a tub filled with vinegar. Once an hour for eight hours, Colette counted the number of rusted steel squares in each group.

Which of the following was a variable that was held constant (control variable) in this experiment?
a. the type of liquid used
b. the size of the squares of steel sheet metal
c. the number of rusted steel squares

QUESTION FOUR: David divided 40 unripe bananas evenly among eight paper bags and sealed the bags. He poked 20 small holes in four of the bags and left the other four without holes. He kept the bags at room temperature for three days. Then, David opened the bags and counted the number of brown spots on each banana. He compared the average number of brown spots on bananas from bags with holes to the average number of brown spots on bananas from bags without holes.

Identify the question that David's experiment can best answer.
a. Do bananas develop more brown spots when they are kept at room temperature compared to in a cold refrigerator?
b. Do bananas develop more brown spots if they are kept in bags with holes compared to bags without holes?
c. Do bananas develop more brown spots when they are kept in brown paper bags compared to in a plastic bag?

QUESTION FIVE: Ten groups of chemistry students combined three solutions that, when mixed, chemically reacted and turned blue. Before mixing, five groups of students heated the solutions to 25C, and five other groups heated the solutions to 50C. The students recorded how many seconds it took for the mixtures to turn blue. Then, the groups shared their results, and the class compared the time it took for the mixtures to turn blue at 25C and at 50C.

Identify the question that the students' experiment can best answer.
a. Does the type of color the mixture produces depend on the temperature of the solutions?
b. Does the mixture of solutions release more gas when they are mixed at 25C compared to 50C?
c. Does the mixture's color change faster when the solutions are mixed at 25C or 50C?

Methane is a gas at room temperature and pressure. Explain why this is the case.

Two different elements that are chemically combined form a __________, while two different elements that are only physically combined form a __________.

Which of the following was a major focus of the Mississippian belief system?

physical connection
an anointed leader
a single deity
spiritual connection

What are Wedges used for? Science. Thank you! <3

Write a three paragraph essay about being a scientist. Include the following: If you could be any kind of scientist, what kind would you be? Why? Describe what your life would be like as the scientist you imagine.

In which way does a balanced chemical equation demonstrate the conservation of matter
A. It shows how matter can be both be created and destroyed by a chemical change
B. It shows the same number of molecules of each compound on both sides
C. It shows how the atoms of an element can appear on only one side of the equation
D. It shows the same number of atoms of each element on both sides of the equation


the subject is science

Match each letter with the correct label. Use the atom diagram below.

Electron - Nucleus - Proton - Neutron

Write the roman numeral atomic name from the chemical formula.​

Help it keeps telling me im wrong

Select the correct scientific notation form of this numeral using only 3 significant figures. 8,468 L

Please help me por favor :'(

What is the series of energy transfers shown in the picture below?

A) chemical to mechanical to electrical to thermal
B) mechanical to chemical to thermal to electrical
C) electrical to thermal to mechanical to chemical
D) thermal to mechanical to electrical to chemical

WILL MARKBRAINLIST FOR BEST ANSWER ASAP PLEASEEEE
Describe the difference between primary and secondary succession.

can someone help me with this please? ill give brainliest

Identify and describe the different forms of precipitation shown in the images.

A restaurant advertises that it is environmentally friendly. It describes the solar panels it uses to generate electricity and the locally grown produce it serves. All the meals it offers are prepared over an open wood fire. Food is served on recycled copper plates, and drinks are served in recycled aluminum cups.

Which correctly lists three renewable resources used by the restaurant?

aluminum, copper, produce
copper, produce, sunlight
produce, sunlight, wood
sunlight, wood, aluminum

PLS ANSWER CORRECTLY 50 POINTS AND BRAINLIEST!!!
During an investigation, a scientist burned 48 g of magnesium strip. After the reaction, the total mass of the product formed was found to be 80 g. Does the law of conservation of mass hold true in this case? Use complete sentences to justify your answer based on numerical calculations.

_____ is the short-term condition of the atmosphere. A. Climate B. Weather C. Precipitation D. Transpiration

whos good at the periodic table cus im not help

Match these items.

1. imprint of plant or animal
original-remains fossil
2. undecayed plant or animal part
carbonized fossil
3. replaced by a mineral
petrified fossil
4. only carbon remains
cleavage
5. mountain
geology
6. from magma
metamorphic
7. from physical and chemical changes
igneous
8. sandstone
print fossil
9. helps identify rocks
landform
10. science of Earth
sedimentary

1. the rate of change in an object's position over time is called what
2. the type of energy that is the sum of kinetic and potential energy at any given time is what
3. A push Or pull that can change the motion of an object (examples: magnetic force, frictional force. Please Help me this is due tomorrow

What does the conversation of mass say about the amount of atoms in the reactants compared to the products?

what is required in order to determine whether or not an object moves

DONT ANSWER I FOUND IT ALREADY
Which best describes the purpose of the ice in this experiment?


A. The ice melts into the flask causing a cloud to form.

B. The ice cools the air around the flask, causing a cloud to form in the flask.

C. The ice is used to hold the water in the flask so that it can't escape.

D. The ice causes the water vapor in the air above the warm water to change, forming a cloud.

Water waves are surface waves. The energy of the waves moves

Question 2 options:

only perpendicular to the motion of the wave.


both parallel and perpendicular to the wave.


only parallel to the motion of the wave.