Matter and Energy

Question 1

Define matter

Answer 1

anything that occupies space and has mass

Question 2

Shape, volume and particle movement of a gas?

Answer 2

variable shape
variable volume
complete freedom of motion

Question 3

Shape, volume and particle movement of a liquid?

Answer 3

variable shape
constant volume
limited to volume of the liquid and shape of the bottom of the container

Question 4

Shape, volume and particle movement of a solid?

Answer 4

constant shape
constant volume
vibrational fixed movement

Question 5

What are the three types of particle movement?

Answer 5

vibration
translation
rotation

Question 6

Define physical property

Answer 6

measured and observed without changing the chemical composition of a substance

Question 7

Examples of physical properties

Answer 7

freezing point
boiling point
density
melting point
color
odor
hardness
conductivity

Question 8

Define chemical property

Answer 8

measured and observed when a substance undergoes a change that alters the chemical composition

Question 9

Examples of chemical properties

Answer 9

hydrogen gas burning in oxygen gas to form water
iron rusting
coal burning in air
electrolysis of water
chlorine reaction with sodium

Question 10

What will allow someone to recognize a substance?

Answer 10

change will not allow someone to recognize a substance but property will

Question 11

Boiling of water

Answer 11

physical

Question 12

Freezing of water

Answer 12

physical

Question 13

Electrolysis of water

Answer 13

chemical

Question 14

Reaction of Cl2 with Na

Answer 14

chemical

Question 15

Melting of iron

Answer 15

physical

Question 16

Rusting of iron

Answer 16

chemical

Question 17

Cutting of wood

Answer 17

physical

Question 18

Burning of wood

Answer 18

chemical

Question 19

Taking a bite of food

Answer 19

physical

Question 20

Digesting food

Answer 20

chemical

Question 21

Define a pure substance

Answer 21

one substance only with definite composition and properties

Question 22

Define a mixture

Answer 22

two or more substances with variable composition with properties that depend on the composition

Question 23

Define an element

Answer 23

can be separated by nuclear reactions into simpler substances but cannot be separated under normal chemical reactions

Question 24

Define a compound

Answer 24

can be separated chemically into simpler substances and has 2 or more elements together

Question 25

Define a homogeneous mixture

Answer 25

can’t recognize ingredients, uniform appearance

Question 26

Define a heterogeneous mixture

Answer 26

can recognize ingredients