Chapter 6 and 7-Chemistry

Question 1

Solid

Answer 1

State of matter with a fixed shape and volume

Question 2

Liquid

Answer 2

State of matter with a fixed volume, but no shape

Question 3

Gas

Answer 3

State of matter with no fixed shape or volume

Question 4

Properties

Answer 4

Characteristics or features of an object or substance

Question 5

Diffusion

Answer 5

The spreading of one substance through another due to the movement of their particles

Question 6

Mass

Answer 6

The quantity of matter in an object

Question 7

Volume

Answer 7

The amount of space taken up by an object or substance

Question 8

Fluid

Answer 8

A substance that flows and has no fixed shape

Question 9

Melting point

Answer 9

When a solid turns into a liquid

Question 10

Boiling point

Answer 10

When a liquid changes to a gas

Question 11

Sublimation

Answer 11

The change from a solid to a gas

Question 12

Precipitation

Answer 12

Falling water in solid or liquid form.

Question 13

Meteorologists

Answer 13

Scientists who predict weather

Question 14

Particle model

Answer 14

Particles that make up all matter and how they behave

Question 15

Expands

Answer 15

Increase in size due to the movement of particles in a substance

Question 16

Contracts

Answer 16

Shorten or become smaller in size

Question 17

Alchemists

Answer 17

Olden day chemists

Question 18

Investigations

Answer 18

Activity aimed at finding information

Question 19

Observations

Answer 19

Information obtained by the use of our senses or measuring instruments

Question 20

Scientists

Answer 20

People working in field of science

Question 21

Elements

Answer 21

Pure substance only made up of one type of atom

Question 22

Atoms

Answer 22

A very small particle that makes up all things.

Question 23

Atomic number

Answer 23

Number of protons in the nucleus of an atom.

Question 24

Chemical symbol

Answer 24

The standard way that scientists write the names of the elements. It is done by using a capital letter and a lower case letter for example, Carbon is C and Copper is Cu

Question 25

Compounds

Answer 25

Substance made up of two or more different types of atoms that been bonded

Question 26

Bonded

Answer 26

Force that holds particles of matter together

Question 27

Mixtures

Answer 27

A combination of substances in which each keeps its own properties

Question 28

Hydrogen

Answer 28

Thee element with the smallest atom

Question 29

Metals

Answer 29

Elements that conduct heat and electricity

Question 30

Non-metals

Answer 30

Elements that do not conduct electricity or heat

Question 31

Metalloids

Answer 31

Elements that have the appearance of metals but not all the other properties of metals

Question 32

Periodic table

Answer 32

A table listing all known elements

Question 33

Group

Answer 33

In the periodic table of elements, a single vertical column of elements with a similar nature

Question 34

Inert

Answer 34

Not reactive

Question 35

Noble gas

Answer 35

Elements in the last column of the periodic table

Question 36

Molecules

Answer 36

Two or more atoms bonded forming a small particle.

Question 37

Polymer

Answer 37

Substance made by joining smaller identical units

Question 38

Plastics

Answer 38

Synthetic substance capable of being Moulded

Question 39

Combustible

Answer 39

Easily lightened