Chemistry Chapter 1; Definitions

Question 1

Pure substance

Answer 1

Material not mixed with anything else

Question 2

Matter

Answer 2

Something all objects are made up of

Question 3

Mixtures

Answer 3

Combination of 2+ Pure substances

Question 4

Compounds

Answer 4

Substance that consists of 2+ different atoms that are chemically bonded into a singular substance

Question 5

Elements

Answer 5

Pure substances that cannot be broken down into simpler substances by chemical methods

Question 6

Heterogeneous

Answer 6

Components in this mixture CAN be seen
Mixture that doesn’t have a uniform composition (isn’t the same throughout)

Question 7

Homogeneous

Answer 7

Mixture with a UNIFORM composition (same throughout)
Components can’t be seen

Question 8

Metals

Answer 8

Most elements on the periodic table
Have a high electrical and thermal conductivity

Question 9

Metalloids

Answer 9

Solid at room temperature
Act as semiconductors

Question 10

Non-metals

Answer 10

Poor conductors of heat and electricity

Question 11

Conductor

Answer 11

Something that allows electrical current to pass through it

Question 12

Insulator

Answer 12

Help electrical appliances not to be dangerous
Don’t allow electrical current to pass through

Question 13

Ionic compound

Answer 13

Bond = metal + non-metal

Question 14

Covalent compound

Answer 14

Bond = non-metal + non-metal
Word equations get PREFIXES

Question 15

Thermal insulator

Answer 15

Don’t conduct heat

Question 16

Thermal conductor

Answer 16

Allows energy (in the form of heat) to pass through