Chapter 1 Review Flashcards

1
Q

Any substance that has a definite composition

A

chemical

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2
Q

process that changes one set of chemicals into another set of chemicals

A

chemical reaction

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3
Q

A form of matter that has a definite shape and volume

A

solid

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4
Q

A state of matter that has no definite shape but has a definite volume.

A

liquid

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5
Q

anything that takes up space and has mass

A

matter

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6
Q

liquid portion of blood

A

plasma

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7
Q

a substance or molecule that participates in a chemical reaction

A

reactant

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8
Q

A substance produced in a chemical reaction

A

product

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9
Q

The amount of space an object takes up

A

volume

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10
Q

the force of gravity on an object

A

weight

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11
Q

amount

A

quantity

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12
Q

A change in a substance that does not change its identity

A

physical change

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13
Q

a substance made by mixing other substances together.

A

mixture

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14
Q

has uniform structure or composition throughout

A

homogeneous

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15
Q

different phases of distinctly different regions

A

heterogeneous

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16
Q

Milk souring is a ______ change.

A

chemical

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17
Q

gasoline burning

A

chemical

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18
Q

ice melting

A

physical

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19
Q

lighting a match

A

chemical

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20
Q

water evaporating

A

physical

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21
Q

chopping wood

A

physical

22
Q

breath fogging a mirror

A

physical

23
Q

cooking an egg

A

chemical

24
Q

bleaching a stain

A

chemical

25
Q

describe two characteristics properties of matter

A

matter has mass and volume

26
Q

explain the difference between quantity and unit

A

quantity is the property that is measured; a unit is the quantity the property is measured in

27
Q

Why is density a derived unit?

A

It is calculated by combining two SI units.

28
Q

The terms odorless and colorless are quantitative terms.

A

False

29
Q

to say that the mass of a gold nugget is 5.0 grams is to use a quantitative term

A

true

30
Q

what are the differences between physical and chemical properties? give an example of a chemical property.

A

physical properties can be determined without changing the identity of a substance. chemical properties describe a substance’s ability to participate in chemical reactions. Ex: rotting, reaction with oxygen/rusting

31
Q

a ratio of equivalent measurements

A

conversion factor

32
Q

explain how chemicals and chemical reactions are an important part of your life.

A

chemicals and chemical reactions take place around you everyday. by learning about them, you can start learning more about the world around you.

33
Q

explain the difference between mass and weight.

A

mass is the quantity of matter in an object and weight is the force produced by gravity acting on a mass.

34
Q

What special meaning does the slope of a graph of mass versus volume have?

A

The slope of a graph of mass versus volume is equal to density

35
Q

density

A

mass/ volume

36
Q

A change in matter that produces one or more new substances

A

chemical change

37
Q

the basic unit of a chemical element.

A

atom

38
Q

Matter that always has exactly the same composition

A

pure substance

39
Q

A pure substance made of only one kind of atom

A

element

40
Q

A group of atoms bonded together

A

molecule

41
Q

What is the SI base unit for mass?

A

gram

42
Q

What is the SI base unit for length?

A

meter

43
Q

What is density?

A

ratio for how many particles a substance has in a certain amount of space

44
Q

The Law of Conservation of Mass states:

A

Matter cannot be created and it cannot be destroyed

45
Q

fireworks are a physical change

A

false

46
Q

What is the chemical property?

A

reacts with air

47
Q

What is percent error?

A

the perfect value of the error divided by the accepted value

48
Q

All matter has:

A

density, volume, mass

49
Q

What is an allotrope?

A

When an element can have two or more forms

50
Q

What is an example of a compound

A

Pure water (H2O)

51
Q

Concrete is a homogeneous structure

A

False

52
Q

Heterogeneous mixture can be separated

A

True