Unite A Sec 1

Question 1

Pure Substance

Answer 1

All the particles that make up the substance are identical
Ex. Element or Compound

Question 2

Element

Answer 2

A pure substance that can not be broken down into other substances

Question 3

Mixture

Answer 3

Combination of 2 or more pure substances

Question 4

Mechanical Mixture

Answer 4

• Also known as a heterogeneous mixture
• The different substances in the mixture are visible

Question 5

Suspension

Answer 5

• A mixture where the elements are in different states
• Where the large elements in the mixture do not dissolve ni matter how hard you stir
  Ex. Dirt in water

Question 6

Colloid

Answer 6

• The substance is mostly dissolved but not completely leaving a foggy mixture
  Ex. Milk

Question 7

Solution

Answer 7

• Known as a homogeneous mixture
• The mixture looks the same throughout

Question 8

How to Identify a Pure Substance

Answer 8

• Melting point
• Boiling point
• State
• Colour

Question 9

Chemical Reaction

Answer 9

The result of a substance or substances when they react together and create a different substance

Question 10

How to Identify When a Chemical Reaction Has Occurred

Answer 10

• Involve the production of a new substance or substances with new physical properties
• Involve the flow of energy
• Cause a phase change Ex. The formation of gasses or bubbles

Question 11

Malleability

Answer 11

The ability of a substances to be deformed or molded into a different shape

Question 12

Ductility

Answer 12

How well an object can take stress with deformation and flexibility

Question 13

Solubility

Answer 13

How well a gas, solid or liquid can dissolve into a substance. Ex. How well salt can dissolve in water

Question 14

HHPS

Answer 14

Hazardous Household Product Symbol

Question 15

WHMIS

Answer 15

Workplace Hazardous Material Information System

Question 16

MSDS

Answer 16

Material Safety Data Sheet

Question 17

John Dalton

Answer 17

• Founded the elemental symbols
• Figured out that atoms are the smallest state of matter
• Made the Billiard Ball Model

Question 18

JJ Thomson

Answer 18

• Made the Plum Pudding Model
• The atom consists of one large positive charge and many small negative charges embedded in it

Question 19

Ernest Rutherford

Answer 19

• Created the “planetary” or “nuclear” model
• Discovered that every atom has a dense positive core called the “nucleus”
• Performed the Gold Foil Experiment

Question 20

Neils Bohr

Answer 20

Discovered that the atoms were arranged around the nucleus in a very specific orbits or energy levels

Question 21

The Quantum Mechanical Model Of The Atom

Answer 21

• The modern model of the electron cloud
• Describes the position of electrons in terms of mathematical probabilities

Question 22

Ions

Answer 22

Atoms that give an uneven number of protons and electrons which give a positive or negative charge

Question 23

Cations

Answer 23

Potisitive Ions

Question 24

Anions

Answer 24

Negative Ions

Question 25

Atoms

Answer 25

Neutrally Charged