Chemistry - Matter

Question 1

What does WHMIS stand for

Answer 1

Workplace Hazardous Materials Information System

Question 2

What are physical properties of matter

Answer 2

Describes the physical appearance and composition of a substance
- boiling point, melting point, malleability, ductility, colour, state, solubility, crystal formation, conductivity, magnetism

Question 3

What are chemical properties of matter

Answer 3

Reactivity of substance, observed through chemical reactions
- ability to burn, flash point, behaviour in air, reaction to water, acids, heat and litmus

Question 4

What is the difference between quantative and qualitative observations

Answer 4

Quantitive: can be measured using instruments
Qualitative: observed through senses

Question 5

What are the two types of matter

Answer 5

Mixtures: combination that can be separated, no definite composition
Pure substance: definite composition

Question 6

What are the two types of mixtures

Answer 6

Heterogeneous/Mechanical mixture: different components are visible, composition is variable throughout mixture
Homogeneous Mixture/Solution: different components are not visible, constant composition throughout

Question 7

What are the two types of pure substances

Answer 7

Element: can’t be broken down chemically
Compound: two or more elements chemically combined, can be broken down