Why can you only change 1 variable in an experiment??? #Science

Answers

Answer 1

Answer: It is important to test only one variable when conducting an experiment because that one variable will only have one change. You want to know whether or not that one change is what caused the outcome of the experiment. If you use too many you don't know what really caused the outcome.

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What causes matter to exist in three different states

Answers

NOT 100% SURE

Thermal Energy..?

When I think of three states of matter I think of water as an example:

• Adding extreme heat to the liquid form of water can turn it into gas.

• Adding heat to ice can turn it into the liquid form of water.

• Freezing the liquid form of water can turn it into ice.

I would say temperature (thermal energy) has an effect of the different states of matter.

Study the solutions in the glasses. Put the solutions in order from concentrated to dilute.A.
1, 2, 3

B.
1, 3, 2

C.
3, 1, 2

D.
2, 3, 1

Answers

A. 1,2,3. The solutions are getting lighter meaning the concentration is decreasing. Its most likely that water was added to dilute the solutions.

Which sentence best describes the process of convection? A. A rock melts when magma touches it. B. Water vapor in the air forms liquid water. C. Cool air sinks, which forces warm air to rise. D. Sunlight travels through space. Can i please get help!

Answers

convection is when cool air sinks and warm air rises. i am not 100% sure though

Please help me with this question!!! On the link that I have attached there are 6 pages scroll down to the 5th page because I need help with number one and number three.I am really confused.
25 points for this question

Answers

Ok so the gravitational force the moon exerts on earth is very small. The ocean, however, is affected by it. How gravity works (in a simplistic sense) is that, when you are closer to something, the force is stronger. So, when the moon is close to Earth (at Perigee) the force of gravity is stronger. So the moon pulls the water more towards itself. This results in higher waves occurring when the moon is closer (at perigee) than at apogee.

Whitch of the following are physical changes ? Rusting
Souring
Melting
Boiling
Freezing

Answers

Answer:

melting, freezing, and boiling are physical changes

Explanation:rusting and souring are ex. of chemical, not physical

Answer:

melting boiling frezzing

Explanation:

An ionic compound is formed whenA a metal bonds with another metal
B a nonmetal bonds with another nonmetal
C a metal bonds with a nonmetal
D three nonmetals bond together

Answers

metal bonds with nonmetal

well, ionic compounds are formed when positive and negative ions are formed so i would say A.

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Andrea is going to the golf course.The golf course charges a flat rate of $5.00 plus $1.50 per bucket of 50 golf balls. When she arrives,she is offered a discount rate of $.50 for a bucket of 50 golf balls plus the same flat rate. Andrea has $8.25 to speed. How many more bucket of golf balls will Andrea be able to get with the discount?A. 2 buckets B. 4 buckets C. 6 buckets D. 8 buckets