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Science > Elements > Flashcards

Elements Flashcards

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0
Q

A pure substance that cannot be broken down into simpler substances is called what

A

Element

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1
Q

what process is not a physical or chemical change

A

Weighing

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2
Q

What is a substance with only one type of particle called

A

Pure substance

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3
Q

What does not affect the characteristic properties of an element

A

The amount of element

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4
Q

Why does a helium filled balloon float up when you let go

A

Helium is less dense than air

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5
Q

What is a characteristic property of elements

A

Hardness

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6
Q

What can be identified by its unique properties

A

Element

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7
Q

What combines with oxygen to form rust

A

Iron

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8
Q

What has a melting point of 1495°C

A

Cobalt

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9
Q

All _______ are either metals, metalloids, or nonmetals

A

Elements

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10
Q

Elements that are shiny and conduct heat and electric current are

A

Metals

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11
Q

Elements that are poor conductors of heat are

A

Nonmetallic

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12
Q

Elements with properties of metals and nonmetals are

A

Metalloids

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13
Q

Elements that are malleable

A

Metals

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14
Q

Type of metalloid

A

Silicon

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15
Q

Another name for metalloid

A

Semi conductor

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16
Q

Elements that are dull

A

Nonmetals

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17
Q

Iodine, sulfur, neon

A

Nonmetals

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18
Q

Lead, copper, tin

A

Metals

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19
Q

Silicon, boron, antimony

A

Metalloids

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20
Q

Which is a compound

A

Salt

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21
Q

What kind of substances composed of two or more elements that are chemically combined

A

Compound

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22
Q

How do the properties of a compound compare with the properties of the elements that form it

A

Always different

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23
Q

How do elements join to form compounds

A

In a specific mass ratio

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24
Q

Is this true

Each compound has its own physical properties

A

Yes

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25
Q

Why are we able to eat sodium and chloride in a compound

A

The compound is harmless

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26
Q

The compound that gives some drinks fizz called

A

Carbonic acid

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27
Q

When you open a Soft drink carbonic acid breaks down into ________ and water

A

Carbon dioxide

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28
Q

The only way to break down compounds is through a

A

Chemical change

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29
Q

Which of the following compounds is broken down to make aluminum

A

Aluminum oxide

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30
Q

What can form compounds from nitrogen in the air

A

Bacteria

31
Q

What type of compound do plants and animals use to make proteins

A

Nitrogen compounds

32
Q

What do plants use during photosynthesis to make carbohydrates

A

Carbon dioxide

33
Q

A pizza is a

A

Mixture

34
Q

A combination of two or more substances that are not chemically combined is a

A

Mixture

35
Q

When 2 or more materials combine chemically they form a

A

Compound

36
Q

How can you tell that the pizza is a mixture

A

You can separate the toppings

37
Q

Mixtures are separated through _______ changes

A

Physical

38
Q

Crude oil is separated through

A

Distillation

39
Q

A mixture of aluminum and iron separated through

A

A magnet

40
Q

Parts of blood are separated through

A

Centrifuge

41
Q

Sulfur and salt are separated through

A

Filter

42
Q

Granite can be pink or black depending on the ______of feldspar, Mika, and quarts

A

Ratio

43
Q

What is not true about solutions

A

They appear to be more than one substance

44
Q

The process in which particles of substances separate and spread evenly through mixture is known as

A

Dissolving

45
Q

In a solution the _______is the substance that is dissolved in the ______ is the substance in which it is dissolved

A

Solute, solvent

46
Q

Salt is _______ in water because it dissolves in water

A

Solute

47
Q

When 2 gasses or two liquids form a solution, the substance that is present in the largest amount is the

A

Solvent

48
Q

A solid solution of metals or nonmetals dissolved in metals is an

A

Alloy

49
Q

What can particles in solution not do because they’re so small

A

They cannot settle out, they cannot scatter light, and they cannot be removed by filtering

50
Q

A measure of the amount of solute dissolved in a solvent is called

A

Concentration

51
Q

What is the difference between a dilute solution and a concentrated solution

A

Dilute less concentrated solute

concentrated more concentrated solute

52
Q

The ability of a solute to dissolve in a solvent at a certain temperature and pressure is called

A

Solubility

53
Q

In a mixture the _________of the substances doesn’t change

A

Identity

54
Q

Mixtures are separated through _________changes

A

Physical

55
Q

Solubility of gases in liquids often _______ as temperatures rise

A

Decreases

56
Q

Solubility of solids and liquids often ______ as temperatures rise

A

Increases

57
Q

Q:The particles in both solution and a collide

A

A:D. Can pass through a finer filter

58
Q

Q:A substance that dissolves in a solvent

A

A:Solute

59
Q

Q:how could a sugar cube be dissolved more quickly?

A

A:Cool the water

60
Q

Q:which of the following is not a reason that compounds are considered pure substances?

A

A:they can be separated by physical methods

61
Q

Q: Elements join in a specific mass__________to form a compound

A

A:Ratio

62
Q

Q:when element form mixture the keep their _____ ______

A

A:original properties

63
Q

Q:what is a solid solution of a metal or nonmetal dissolved in

A

A: alloy

64
Q

Q:what is a solid solution of a metal or nonmetal dissolved inanother substance

A

A:alloy

65
Q

Q:a collide has the properties of a solution and ___________

A

A: suspensions

66
Q

Q:particle of two or more substances distributed evenly among each other form a(n)_________

A

A:solution

67
Q

Q:ability of ones substance to dissolve in another at a given temperature and pressure

A

A:solubility

68
Q

Q:compound used by plants during photosynthesis

A

A:Carbon dioxide

69
Q

Q:bacteria make compounds from _________ in the air.

A

A:nitrogen

70
Q

Q:the flammability of a substance

A

A: A. Chemical property

71
Q

Q:process that separates mixtures based on the boiling point of the components

A

A:distillation

72
Q

Q:compounds also known as table salt

A

A:sodium chloride

73
Q

Q:a mixture of liquids can be separated by __________

A

A:distillation

74
Q

Q:a steel crowbar is an example of an ____________.

A

A:alloy

Science (20 decks)

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