2.1 Compounds and Mixtures

Question 1

pure substances may be ____ or _____.

Answer 1

1. elements
2. compounds

Question 2

Homogenous and heterogeneous mixtures (examples)

Answer 2

Homogenous:
- solutions
- alloys

Heterogeneous:
- suspensions
- colloids

Question 3

what are the consistent physical properties of pure substances?

Answer 3

• melting point
• boiling point
• density
• conductivity
• solubility

Question 4

what are consistent chemical properties of pure substances?

Answer 4

• reactivity
• stability
• toxicity
• flammability
• bond strength