Unit 1 - Matter and Energy - Properties of Matter

Question 1

What are pure substances?

Answer 1

Made of only one type of atom/molecule

Ex: Elements and Compounds

Question 2

Definition of Elements (2)

(Found in Periodic Table)

Answer 2

1. Substances composed of the same type of atom
2. CANNOT Be Broken Down by a Chemical Change

Question 3

Definition of Compound (2)

Answer 3

1. Two or more different elements are bonded together
2. Compounds CAN be broken by a chemical change.

Question 4

Definition of Mixture

Answer 4

Combination of substances that can be physically seperated

Question 5

Definition of Homogenous Mixtures

Answer 5

Thoroughly Blended Evenly

Question 6

Definition of Heterogeneous Mixtures

Answer 6

Materials are easily distinguished

Question 7

Definition of Filtration (2)

Answer 7

1. Separation by particle size
2. Only applies to heterogeneous mixtures

Question 8

Definition of Distillation (1)

Answer 8

Separation by different boiling points

Question 9

Definition of Chromatography (2)

Answer 9

1. Separation by passing the mixture through a medium
2. Different components move at different rates

Question 10

Definition of Crystallization (1)

Answer 10

Separation by freezing points & vapor pressure