Chapter 1 terms

Question 1

The symbols quickly identify the type of hazard associated with a chemical substance.

Answer 1

WHMIS - Workplace Hazardous Materials Information System

Question 2

Provides more detailed information than WHMIS.
Each chemical substance has this. This tells you important things like Health risks of exposure, Personal protective equipment (PPE) to wear when handling it, etc.

Answer 2

SDS - Safety data sheet

Question 3

anything that has a mass and volume.

Answer 3

matter

Question 4

amount of matter in a substance, Measured in grains or Kilograms

Answer 4

Mass

Question 5

The amount of space occupied by a Substance, measured in liters or milliliters

Answer 5

volume

Question 6

any characteristic that can be used to describe matter. There are two types of properties: physical and chemical.

Answer 6

property

Question 7

any characteristic of matter that can ONLY be observed when substances react with each other and matter is changed to create new substances.

Answer 7

Chemical property

Question 8

Any characteristic of matter that can be measured or observed without changing the type of matter in a substance. In other words, no chemical reaction is needed to observe that property.

Answer 8

Physical property

Question 9

the degree to which the material reflects light. Is it qualitative or quantitative? is it physical or chemical?

Answer 9

lustre and it is qualitative and physical

Question 10

ability to be beat or beaten into sheets. Is it qualitative or quantitative? Is it physical or chemical? `

Answer 10

malleability and it is qualitative and physical

Question 11

degree to which the substance combines with another substance. Is it physical or chemical?

Answer 11

reactivity and is chemical.

Question 12

degree to which a substance burns. Is it physical or chemical?

Answer 12

combustibility and is chemical

Question 13

describe without numbers

Answer 13

Qualitative

Question 14

described or measured using numbers

Answer 14

Quantitative

Question 15

solid, liquid, gas. Is it qualitative or quantitative? is it physical or chemical?

Answer 15

state and is qualitative and physical.

Question 16

colour. Is it qualitative or quantitative? is it physical or chemical?

Answer 16

colour and it is qualitative and physical

Question 17

ability to be drawn into wires. Is it qualitative or quantitative? is it physical or chemical?

Answer 17

ductility and it is qualitative and physical

Question 18

Appearance and feel of the surface. Is it qualitative or quantitative? Is it physical or chemical?

Answer 18

Texture and it is qualitative and physical.

Question 19

Tendency to be attracted to a magnet. Is it qualitative or quantitative? Is it physical or chemical?

Answer 19

Magnetism is qualitative and physical.

Question 20

ability to be dissolved in water. Is it qualitative or quantitative? is it property or chemical?

Answer 20

solubility and it is quantitative and property.

Question 21

resistance to flow. Is it qualitative or quantitative? Is it physical or chemical?

Answer 21

viscosity and it is quantitative and physical.

Question 22

ratio to a material’s mass to its volume. Is it qualitative or quantitative? is it property or chemical?

Answer 22

density and it is quantitative and it is property.

Question 23

temperature of freezing/melting. Is it qualitative or quantitative? is it physical or chemical?

Answer 23

melting point and it is quantitative and physical

Question 24

temperature of boiling/condensing. Is it qualitative or quantitative? Is it property or chemical?

Answer 24

boiling point and it is quantitative and property.

Question 25

degree to which a substance reacts in the body to produce harmful substances. is it property or chemical?

Answer 25

toxicity and it is chemical.

Question 26

substance that cannot be broken down into smaller parts or changed into another substance.

Answer 26

element

Question 27

the basic unit of all matter. They are the smallest pieces of matter that still have the properties of that matter.

Answer 27

atom

Question 28

scientist tried to describe the properties of atoms but they cannot see it, so they made their ideas without ever touching or seeing the atom by making inferences

Answer 28

atomic theory

Question 29

small particles with a negative electric charge

Answer 29

electrons

Question 30

a subatomic particle with a neutral charge and a mass slightly greater than that of a proton.

Answer 30

neutron

Question 31

positively charged particles

Answer 31

protons

Question 32

the small and dense central part of an atom. It contains protons and neutrons.

Answer 32

nucleus

Question 33

smaller particles that make up an atom including protons, neutrons and electrons.

Answer 33

Subatomic particles

Question 34

supported by evidence but may be difficult to test or prove with experiments. more evidence may be needed for acceptance by the scientific community. attempt to explain phenomena and can often change with more evidence.

Answer 34

scientific theory.

Question 35

supported by a variety of repeated experiments and the evidence must hold up to many different tests. describe rather then explain phenomena and can change if new evidence arrives.

Answer 35

scientific Law

Question 36

ideas that are based on little to no evidence. To be useful such ideas must be testable through observation and experimentation. Hypotheses are examples of this

Answer 36

Conjunction

Question 37

a conclusion based on available evidence and logical reasoning.

Answer 37

inference