Topic 1 - Matter can be described and organized by its physical and chemical properties Flashcards

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1
Q

What is evaporation?

A

Change from a liquid to a gas.

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2
Q

What is melting?

A

Change from a solid to a liquid.

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3
Q

What is condensation?

A

Change from a gas to a liquid.

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4
Q

What is freezing?

A

Change from a liquid to a solid.

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5
Q

What is WHMIS?

A

Workplace Hazardous Materials Information System

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6
Q

What is physical properties?

A

Describes the appearance and composition of a substance.

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7
Q

What is a physical change?

A

Any change not involving a change in the substance`s chemical identity. (can be reversed)

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8
Q

What are the few physical properties of matter?

A

Melting Point, Boiling Point, Hardness, Malleability, Ductility, Crystal shape, Solubility, Density, Conductivity

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9
Q

What is Solubility?

A

Capability of a substance to be dissolved in another.

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10
Q

What is Density?

A

Amount of mass in a given volume of a substance.

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11
Q

What is Conductivity?

A

Capacity of a substance to conduct electricity or heat.

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12
Q

What is Hardness?

A

Ability to resist being scratched.

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13
Q

What is Malleability?

A

Rolled into sheets.

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14
Q

What is Melting Point?

A

Temperature which it changes from solid to liquid.

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15
Q

What is Boiling Point?

A

Temperature which it changes from liquid to gas.

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16
Q

What is Chemical Properties?

A

Explains how a substance relates with other substances.

. ph, Reactivity, Toxicity, Combustibility, Chemical, Behavior in air, Stability

17
Q

What is a Pure Substance?

A

Made of only one kind of matter.

18
Q

What is ductility?

A

Stretched into a long wire.

19
Q

What is a Element?

A

Primary building blocks for all compounds.

20
Q

What is a compound?

A

Two or more elements combine chemically

21
Q

What is a Mixture?

A

A combination of pure substances

22
Q

What is a Mechanical Mixture (Heterogeneous Mixture)?

A

Different substances which form up the mixture are visible.

23
Q

What is a Solution (Homogeneous Mixture)?

A

Different substances which make up are not visibly split.

24
Q

What is a Suspension?

A

Cloudy mixture which small particles of one substance are held within another.

25
Q

What is a Colloid?

A

Cloudy mixture however particles of the suspended particles are tiny which cannot easily split out from the extra substance.
Ex. Milk, Ketchup, Whipped Cream, Butter, Jelly

26
Q

What is a Chemical Change?

A

Happens when two or more materials act and form new materials. (cannot be reversed)
Ex. Combustion, mixing an acid and a base, Photosynthesis, Iron Rusting

27
Q

What are Evidences of a Chemical Change?

A
Evidence of Chemical Change
Change in Colour
Change in Odour 
The Formation of Solid & Gas
Thermal Energy
Release or the Absorption of Heat Energy
28
Q

What is an exothermic reaction?

A

It releases energy

29
Q

What is an endothermic reaction?

A

absorb energy which is warm or cold

30
Q

What is MRE?

A

Meals Ready To Eat

31
Q

What are examples of a physical change?

A
  • Changes of State
  • Dissolving
  • Absorption of water into a towel
  • Crumpling a piece of paper
  • Pulling copper into a thin wire
  • Cutting a material
  • Breaking glass
  • Writing on a Sheet of Paper
32
Q

What are examples of a chemical change?

A

Combustion, mixing an acid and a base, Photosynthesis, Iron Rusting

33
Q

What is an element?

A

Basic building blocks of all compounds

34
Q

What is a compound?

A

Made of only one kind of matter