Question

science; need help, 7th gr. medal +fan

Answer 1

maybe........ :}

Answer 2

Removing energy will cause

particle motion to decrease with decreased kinetic energy

particle motion to increase with decreased kinetic energy

particle motion to increase with increased kinetic energy

particle motion to decrease with increased kinetic energy

Answer 3

remember, kinetic energy energy obtained by movement.

Answer 4

so, removing the energy could only cause........ particle motion to decrease with decreased kinetic energy !

Answer 5

your so sweet, thanks for the medal. :}

Answer 6

You're welcome.

Answer 7

Which of the following statements is true concerning a heating curve?

It is a pie chart that shows the phases of a substance.

It is a bar graph that shows a change over time.

It shows the phase changes of a substance over time.

It has nothing to do with heating a substance





A?

Answer 8

Its not A, a pie chart is the shape of a circle. [heating curve is like a line]

Answer 9

It has nothing to do with heating a substance

Answer 10

In which of these samples do the molecules most likely have the most kinetic energy?

solid ice at −5°C

water vapor at 150°C

liquid water at 98°C

ice water at 0°C


I tried C but it said it was wrong

Answer 11

heating curve - a plot of temperature verses time for a substance where energy is added at a constant rate.

Answer 12

water vapor at 150°C - the hotter the temperature, the more the kinetic energy

Answer 13

I understand now.


Precipitation occurs when

water molecules in the atmosphere lose kinetic energy and speed up

water molecules in the atmosphere gain kinetic energy

water molecules in the atmosphere speed up and fall

water molecules in the atmosphere slow down and come together


This has to be C, am i right?

Answer 14

i think so

Answer 15

hen the water vapors in the air get cold enough to condense together. When the droplets condense enough, they get heavy. When they get too heavy, they fall to the ground as precipitation.

Answer 16

are you busy? i need help with one more thing

Answer 17

sure thing, im not busy

Answer 18

Yay. Okay, When you change the amount of a substance, the time it takes to reach the boiling point

always increases

stays the same

always decreases

increases or decreases depending on how the amount changed

Answer 19

the lower the amount, the faster it takes to reach boiling point, so what do you think?

Answer 20

Maybe its D

Answer 21

i would think so

Answer 22

:}

Answer 23

Which phase change results with increased kinetic energy

boiling

condensation

freezing

precipitation


This more than likely is A

Answer 24

correct

Answer 25

Which of these best describes how the kinetic energy of carbon dioxide molecules change as the carbon dioxide is heated?

Kinetic energy decreases.

Kinetic energy increases.

Kinetic energy increases, then decreases.

Kinetic energy decreases, then increases.


I think C ?

Answer 26

its actually B , the kinetic energy does not decrease

Answer 27

did you get it ?

Answer 28

I keep think it'll increase-.-

Answer 29

What happens to the molecules in a glass of water as the water evaporates?

They slow down.

They move faster.

They increase in volume.

They are destroyed.

C right?

Answer 30

When the water is heated, the molecules have an increase in heat energy which causes the transition into a different form. so...........

Answer 31

the molecules should move faster

Answer 32

are you in gca?

Answer 33

gulf coast acamdy ?

Answer 34

oh, im in gca

Answer 35

oh aha that's cool

Answer 36

so.. did you understand everything I told you before?

Answer 37

YES!!

Answer 38

awesome, im proud of you.

Answer 39

[sorry, i always sound like im a mom]

Answer 40

Lol. xD

Answer 41

so, thats it ?

Answer 42

yes ma'am

Answer 43

lol, ok bye :}

Answer 44

Okay, bye