Ch.6 States Of Matter

Question 1

Solid

Answer 1

A state of matter that has a fixed shape and volume

Question 2

Liquid

Answer 2

A state of matter that has a fixed volume, but no fixed shape

Question 3

Gas

Answer 3

A state of matter with no fixed shape or volume

Question 4

Properties

Answer 4

The 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 (usually measured in grams or kilograms)

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. Gases and liquids are fluids.

Question 9

Melting Point

Answer 9

The temperature at which a solid substance turns into a liquid (melts) or a liquid turns into a solid (freezes)

Question 10

Boiling Point

Answer 10

The temperature at which a liquid changes to a gas

Question 11

Sublimation

Answer 11

The change in state from a solid into a gas (or from a gas into a solid) without first becoming a liquid

Question 12

Precipitation

Answer 12

The falling water in solid or liquid form. The type of precipitation depends mostly on the temperature in the clouds and the air around them.

Question 13

Meteorologists

Answer 13

Scientist who uses observation of the atmosphere to predict or explain the weather

Question 14

Particle Model

Answer 14

A description of the moving particles that make up all matter and how they behave. The model explains the properties of solids, liquids and gases.

Question 15

Expand(s)

Answer 15

The increase in size due to the movement of particles in a substance

Question 16

Contract

Answer 16

To shorten or become smaller in size

Question 17

Atom

Answer 17

A very small particle that makes up all things. Atoms have the same properties as the objects they make up.

Question 18

Atomic Number

Answer 18

The number of protons in the nucleus of an atom. The atomic number determines which element an atom is.

Question 19

Chemical Symbol

Answer 19

The standard way that scientists write the names of the elements, using either a capital letter or a capital followed by a lowercase letter. For example, carbon is C and copper is Cu.

Question 20

Elements

Answer 20

The pure substance made up of only one type of atom

Question 21

Metals

Answer 21

The elements that conduct heat and electricity; shiny solids that can be made into thin wires and sheets that bend easily. Mercury is the only liquid metal.

Question 22

Non-Metals

Answer 22

The elements that do not conduct electricity or heat. They melt and turn into gases easily and are brittle and often coloured.

Question 23

Metalloids

Answer 23

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

Question 24

The Periodic Table Of Elements

Answer 24

A table listing all known elements. The elements are grouped according to their properties and in order of the number of protons in their nucleus.

Question 25

Group

Answer 25

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

Question 26

Inert

Answer 26

Not reactive

Question 27

Noble Gases

Answer 27

The elements in the last column of the periodic table. They are extremely inert gases.

Question 28

Polymer

Answer 28

The substance made by joining smaller identical units. All plastics are polymers.

Question 29

Plastics

Answer 29

synthetic substance capable of being moulded