Question

Will you guys check my answers? Fan and metal!

Answer 1

No system is completely closed off from its surroundings. Which represents a system that is almost completely closed?

A.a wood-burning fireplace

B.a capped soda bottle

C.a washing machine

D.a pot of boiling water
I say B.

Answer 2

C, would be the correct answer. It is tightly closed off (with the cap) and some chemical reactions can take place inside of the liquid. In addition, pressure increases against the inside of the bottle.

Answer 3

Okay, how about this one?Which describes the characteristics of a liquid?

A.
It has no fixed volume or shape.

B.
It has a fixed volume and varied shape.

C.
It has high energy and expands to fill the container.

D.
It has a fixed volume and shape.

Answer 4

Either B or D, I'm not totally sure @mr_basketball27

Answer 5

@Loser66 do you think you cold help me?

Answer 6

I think it is B

Answer 7

could sorry! and on the second one?

Answer 8

Liquids take the shape of its container and you can measure its volume using the graduated cylinder. It's made up of particles that are far apart from each other, having both indefinite shape and indefinite volume

Answer 9

A.It has no fixed volume or shape.

Answer 10

Okay, what about this question,During which transition are molecules moving farther apart?

A.
Water boils.

B.
Water falls over a cliff.

C.
Rain turns to snow.

D.
Steam forms water droplets.
A or D

Answer 11

C.as water --> steam (gas) the molecules move farther apart

Answer 12

@mr_basketball27 what does fixed volume mean??

Answer 13

In terms of gases, a fixed volume would mean that the pressure, temperature and the number of molecules can change but the volume, or area in which the molecules lie, must remain constant

Answer 14

it means the amount of volume is fixed, like if it is 3cm^3, then it is, no matter what the container is, the volume is 3cm^3, period.
Hence the liquid is fixed volume and varied of shape, it is B for the second question

Answer 15

C is a correct answer also. If we have to pick the precise one, then C is good

Answer 16

but B is not wrong one. hehehe.. ok, we meet now.

Answer 17

I'm confused.... B is wrong for the second one?

Answer 18

Liquids have a fixed volume because the amount of liquid you have will never change in size no matter what size or shape the container is. In Layman's terms, you dont get more… or less water by changing the cup it is in; it simply changes shape. Liquids are similar in density to solids; in both of these phases the constituent molecules or atoms are close enough to effectively be in contact. The atoms or molecules which are not getting any closer to each other are also not gettting any farther apart, because of whatever chemical bond has caused them to be in that phase (solid or liquid). This differs from the gas phase in which atoms or molecules are quite far apart, and therefore have lots of room to be squeezed closer to gether if you compress the gas, and equally well they can easily expand without limit if they are given more room in which to expand.

Answer 19

Correct? @Loser66