Answers25-26 KCS18 Chemistry ICHeat

Heat Answers

23 verified answers2 views
1
Free Preview

Question text not available

Question illustration
A
bonfire to air
B
air to bonfire
2
Free Preview

ice to handhand to ice

Question illustration
A
ice to hand
B
hand to ice
3

Why does a hot water bottle feel warm?

A
Molecules in the hot water bottle are moving faster than molecules in the skin.
B
Molecules in the skin are moving faster than molecules in the hot water bottle.
4

Which description explains events that take place during the mixing? Select all that apply.

A
Warm water molecules move more slowly than cold water molecules.
B
Collisions result in transfer of energy from molecules of higher kinetic energyto molecules of lower kinetic energy.
C
Warm water molecules slow down while cold water molecules speed up.
5

Burning a candle

A
endothermic
B
exothermic
C
endothermic
D
exothermic
E
endothermic
F
exothermic
G
endothermic
H
exothermic
I
endothermic
J
exothermic
6

Question text not available

A
Option
B
Option
7

Question text not available

A
Option
B
Option
8

ice cube to tap watertap water to ice cube

Question illustration
A
ice cube to tap water
B
tap water to ice cube
9

Question text not available

A
Option
Option A
B
Option
Option B
10

Question text not available

A
Option
Option A
B
Option
Option B
11

Question text not available

A
Option
Option A
B
Option
Option B
12

Question text not available

Question illustration
A
ice cube to tap water
B
tap water to ice cube
13

Question text not available

Question illustration
A
pot to electric burner
B
electric burner to pot
14

Question text not available

Question illustration
A
bonfire to air
B
air to bonfire
15

Why does a hot water bottle feel warm?

A
Molecules in the hot water bottle are moving faster than molecules in the skin.
B
Molecules in the skin are moving faster than molecules in the hot water bottle.
16

Why does a glass containing an iced beverage feel cold?

A
Molecules in the glass are moving faster than molecules in the skin.
B
Molecules in the skin are moving faster than molecules in the glass.
17

Which description explains events that take place during the mixing? Select all that apply.

A
Warm water molecules move more slowly than cold water molecules.
B
Collisions result in transfer of energy from molecules of higher kinetic energyto molecules of lower kinetic energy.
C
Warm water molecules slow down while cold water molecules speed up.
18

Burning a candle

A
endothermic
B
exothermic
C
endothermic
D
exothermic
E
endothermic
F
exothermic
G
endothermic
H
exothermic
I
endothermic
J
exothermic
19

Question text not available

Question illustration
A
exothermic
B
endothermic
20

Why does a glass containing an iced beverage feel cold?

A
Molecules in the glass are moving faster than molecules in the skin.
B
Molecules in the skin are moving faster than molecules in the glass.

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