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7th Grade Science > Chapter 2 Matter > Flashcards

Chapter 2 Matter Flashcards

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Biology 101 flashcards
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
Q

Exothermic Change

A

A change in which energy is released

26
Q

Kinetic Energy

A

The energy of matter in motion

27
Q

Potential Energy

A

The energy of an object because of its position

28
Q

Chemical Energy

A

A form of potential energy that is stored in the chemical bonds between atoms

29
Q

Electromagnetic Energy

A

A form of energy that travels through space as waves

30
Q

Electrical Energy

A

The energy of electrically charged particles moving from one place to another

31
Q

Anything that has mass and takes up space

A

Matter

32
Q

A single kind of matter

A

Substance

33
Q

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

A

Physical Property

34
Q

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

A

Chemical Property

35
Q

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

The simplest substances

A

Element

36
Q

The basic particle from which all elements are made

A

Atom

37
Q

A force of attraction between two atoms

Occurs when atoms combine

A

Chemical Bond

38
Q

Groups of two or more atoms held together by chemical bonds

A

Molecules

39
Q

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

A

Compound

40
Q

Representation of a chemical compound

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

A

Chemical Formula

41
Q

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

A

Mixture

42
Q

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

A

Homogeneous Mixture

43
Q

A mixture where you can see the different parts

A

Heterogeneous Mixture

44
Q

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

A

Solution

45
Q

A measure of the force of gravity on an object

A

Weight

46
Q

The measurement of the amount of matter in an object

A

Mass

47
Q

The amount of space that matter occupies

A

Volume

48
Q

Relates the mass of a material in a given volume

= mass/volume

A

Density

49
Q

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

A

Physical Change

50
Q

A change in matter that produces one or more new substances

A

Chemical Change

51
Q

The ability to do work or cause change

A

Energy

52
Q

The total energy of all of the particles in an object

A

Thermal Energy

53
Q

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

A

Temperature

54
Q

Endothermic Change

A

A Change in which energy is taken in

55
Q

Exothermic Change

A

A change in which energy is released

56
Q

The energy of matter in motion

A

Kinetic Energy

57
Q

The energy of an object because of its position

A

Potential Energy

58
Q

A form of potential energy that is stored in the chemical bonds between atoms

A

Chemical Energy

59
Q

A form of energy that travels through space as waves

A

Electromagnetic Energy

60
Q

The energy of electrically charged particles moving from one place to another

A

Electrical Energy

7th Grade Science (4 decks)

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