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Quiz Flashcards

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Biology 101 flashcards
1
Q

List 5 indicators of a chemical change of matter

A 
Change of colour
Change of odour
Bubbles
Energy 
Precipitate is formed
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2
Q

List 2 indicators of a physical change of matter

A

It is a change of state

Or folding, cutting, mixing

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3
Q

What is quantitative

A

Measuring

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4
Q

What is qualitative

A

5 senses

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5
Q

What is matter

A

Anything that has mass or takes up space

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6
Q

What is a heterogeneous mixture

A

Mixture but being able to see each pure substance

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7
Q

What is a compound

A

A compound is a substance made up of two or more elements that are chemically combined

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8
Q

What is an element

A

A pure substance made of only one kind of atom

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9
Q

What is a solid

A

Solids have a definite volume and shape

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10
Q

What is a liquid

A

A liquid has a definite volume but no shape

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11
Q

Liquid to solid and solid to liquid

A

Freezing and Melting

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12
Q

Liquid to gas and gas to liquid

A

Evaporation and Condensation

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13
Q

Solid to gas and gas to solid

A

Sublimation and Desublimation

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14
Q

What is the definition of physical change

A

A physical change is a change in a substance that DOES NOT make a new substance

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15
Q

What is the definition of a chemical change

A

A change in which one or more new substances are produced

You can’t get the original substance back

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16
Q

What is gas

A

Gas has variable shape and volume

17
Q

What is Reactivity

A

Some materials will react with various substances
Or two substances will react together to make a new substance

Acids, bases, and water

18
Q

What is Combustibility

A

The ability of a substance to burn in air

19
Q

What is Stability

A

The ability of a substance to remain uncharged

20
Q

What is Toxicity

A

The ability of a substance to cause harmful effects in plants and animals

21
Q

What does the Mohs scale measure

A

It measures hardness

22
Q

How is density measured

A

g/cm3

23
Q

Categories of physical properties

A

Hardness
Malleability
Ductility
Lustre

24
Q

What does filtration separation

A

Filtration is a method for separating an insoluble solid from a liquid

25
Q

What does Evaporation separation

A

Evaporation is used to separate a soluble solid from a liquid

26
Q

What is DDT

A

Soluble physical property that makes it dangerous

27
Q

What is viscosity

A

How easy a liquid flows

28
Q

Why is water called a universal solvent

A

Allows you to carry a large number of nutrients and chemicals

29
Q

What is Conductivity

A

The ability to conduct electricity

30
Q

What is malleability

A

The ability to be hammered into thin sheets

31
Q

What is a solvent

A

Dissolving agent

32
Q

What is a solute

A

What is being dissolved

33
Q

Water is the only natural substance that exists

A

In all three phases

Science (12 decks)

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