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7th Grade Science > Chapter 2 Matter > Flashcards

Chapter 2 Matter Flashcards

(60 cards)

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1
Q

Matter

A

Anything that has mass and takes up space

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2
Q

Substance

A

A single kind of matter

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3
Q

Physical Property

A

A characteristic of a pure substance that can be observed without changing it into another substance

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4
Q

Chemical Property

A

A characteristic of a pure substance that describes its ability to change into different substances

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5
Q

Element

A

A pure substance that cannot be broken down into other substances by chemical or physical means

The simplest substances

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6
Q

Atom

A

The basic particle from which all elements are made

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7
Q

Chemical Bond

A

A force of attraction between two atoms

Occurs when atoms combine

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8
Q

Molecules

A

Groups of two or more atoms held together by chemical bonds

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9
Q

Compound

A

A pure substance made of two or more elements chemically combined in a set ratio

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10
Q

Chemical Formula

A

Representation of a chemical compound

Shows the elements in a compound and the ratio of the atoms

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11
Q

Mixture

A

Made of two or more substances that are together in the same place but are not chemically combined

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12
Q

Heterogeneous Mixture

A

A mixture where you can see the different parts

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13
Q

Homogeneous Mixture

A

A mixture where the substances are so evenly mixed that you can’t see the different parts

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14
Q

Solution

A

A well-mixed mixture containing a solvent and at least one solute that has the same properties throughout

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15
Q

Weight

A

A measure of the force of gravity on an object

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16
Q

Mass

A

The measurement of the amount of matter in an object

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17
Q

Volume

A

The amount of space that matter occupies

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18
Q

Density

A

Relates the mass of a material in a given volume

= mass/volume

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19
Q

Physical Change

A

Any change that alters the form or appearance of matter but does not make any substance in the matter different into a different substance

Changes of State, Shape or Form

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20
Q

Chemical Change

A

A change in matter that produces one or more new substances

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21
Q

Energy

A

The ability to do work or cause change

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22
Q

Thermal Energy

A

The total energy of all of the particles in an object

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23
Q

Temperature

A

A measure of the average energy of random motion of particles of matter

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24
Q

Endothermic Change

A

A change in which energy is taken in

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25
Exothermic Change
A change in which energy is released
26
Kinetic Energy
The energy of matter in motion
27
Potential Energy
The energy of an object because of its position
28
Chemical Energy
A form of potential energy that is stored in the chemical bonds between atoms
29
Electromagnetic Energy
A form of energy that travels through space as waves
30
Electrical Energy
The energy of electrically charged particles moving from one place to another
31
Anything that has mass and takes up space
Matter
32
A single kind of matter
Substance
33
A characteristic of a pure substance that can be observed without changing it into another substance
Physical Property
34
A characteristic of a pure substance that describes its ability to change into different substances
Chemical Property
35
A pure substance that cannot be broken down into other substances by chemical or physical means The simplest substances
Element
36
The basic particle from which all elements are made
Atom
37
A force of attraction between two atoms Occurs when atoms combine
Chemical Bond
38
Groups of two or more atoms held together by chemical bonds
Molecules
39
A pure substance made of two or more elements chemically combined in a set ratio
Compound
40
Representation of a chemical compound Shows the elements in a compound and the ratio of the atoms
Chemical Formula
41
Made of two or more substances that are together in the same place but are not chemically combined
Mixture
42
A mixture where the substances are so evenly mixed that you can't see the different parts
Homogeneous Mixture
43
A mixture where you can see the different parts
Heterogeneous Mixture
44
A well-mixed mixture containing a solvent and at least one solute that has the same properties throughout
Solution
45
A measure of the force of gravity on an object
Weight
46
The measurement of the amount of matter in an object
Mass
47
The amount of space that matter occupies
Volume
48
Relates the mass of a material in a given volume = mass/volume
Density
49
Any change that alters the form or appearance of matter but does not make any substance in the matter different into a different substance Changes of State, Shape or Form
Physical Change
50
A change in matter that produces one or more new substances
Chemical Change
51
The ability to do work or cause change
Energy
52
The total energy of all of the particles in an object
Thermal Energy
53
A measure of the average energy of random motion of particles of matter
Temperature
54
Endothermic Change
A Change in which energy is taken in
55
Exothermic Change
A change in which energy is released
56
The energy of matter in motion
Kinetic Energy
57
The energy of an object because of its position
Potential Energy
58
A form of potential energy that is stored in the chemical bonds between atoms
Chemical Energy
59
A form of energy that travels through space as waves
Electromagnetic Energy
60
The energy of electrically charged particles moving from one place to another
Electrical Energy

7th Grade Science (4 decks)

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