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3. Grade 9: Science in English > Unit B Matter and Chemical Change: Section 1 > Flashcards

Unit B Matter and Chemical Change: Section 1 Flashcards

1
Q

What are the states of matter?

A

Solid, liquid, gas

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2
Q

What is it called when you go from solid to liquid?

A

Melting

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3
Q

What is it called when you go from liquid to solid?

A

Freezing

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4
Q

What is it called when you go from liquid to gas?

A

Evaporation

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5
Q

What is it called when you from gas to liquid?

A

Condensation

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6
Q

What is it called when you go from solid to gas?

A

Sublimination

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7
Q

What is it called when you go from gas to solid?

A

Deposition

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8
Q

What are properties?

A

Characteristics that can be used to describe a substance

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9
Q

What are the two main types of properties?

A

Physical

Chemical

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10
Q

What are the physical properties of matter?

A 
Color
Luster
Melting point
Boiling point
Hardness
Malleability 
Ductility
Crystal shape
Solubility 
Density
Conductivity
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11
Q

What is lustre?

A

An objects shininess

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12
Q

What is hardness?

A

An objects ability to resist being scratched

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13
Q

What is malleability?

A

The ability for an object to be pounded or rolled into sheets

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14
Q

What is ductility?

A

The ability for an object to be stretched into a long wire

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15
Q

When an object undergoes a physical change is anything new formed?

A

No

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16
Q

What does a chemical property describe?

A

How a substance reacts to other substances such as acids

17
Q

What is formed in a chemical change?

A

A new substance

18
Q

What are some examples of chemical properties?

A 
Reaction with acids
Ability to burn
Reaction with water
Behavior in air
Reaction to heat
19
Q

What are types of pure substances?

A

Elements and compounds

20
Q

What is a element?

A

A material that cannot be broken down into any simpler substance

21
Q

What is a compound?

A

When two or more elements combine chemically

22
Q

What is a mechanical/Heterogeneous mixture?

A

When the different substances that make up the mixture are visible

23
Q

What is a solution/Homogeneous mixture?

A

When the different parts that make it are not separately visible

24
Q

What is a suspension?

A

A cloudy mixture in which tiny droplets are suspended within another

25
Q

What are colloids?

A

A cloudy mixture in which the the particles of the substance are so small that they do separate out easily

26
Q

A chemical change occurs when…

A

Two or more materials react and create new materials. And have completely different properties from the original substance

27
Q

A physical change is one in which…

A

A material changes from one state to another

28
Q

What are some examples of chemical change?

A

Change in color
Change in odour
Formation of a solid or gas
Release or absorption of energy

3. Grade 9: Science in English (20 decks)

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