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Elements Flashcards

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
Is this true Each compound has its own physical properties
Yes
25
Why are we able to eat sodium and chloride in a compound
The compound is harmless
26
The compound that gives some drinks fizz called
Carbonic acid
27
When you open a Soft drink carbonic acid breaks down into ________ and water
Carbon dioxide
28
The only way to break down compounds is through a
Chemical change
29
Which of the following compounds is broken down to make aluminum
Aluminum oxide
30
What can form compounds from nitrogen in the air
Bacteria
31
What type of compound do plants and animals use to make proteins
Nitrogen compounds
32
What do plants use during photosynthesis to make carbohydrates
Carbon dioxide
33
A pizza is a
Mixture
34
A combination of two or more substances that are not chemically combined is a
Mixture
35
When 2 or more materials combine chemically they form a
Compound
36
How can you tell that the pizza is a mixture
You can separate the toppings
37
Mixtures are separated through _______ changes
Physical
38
Crude oil is separated through
Distillation
39
A mixture of aluminum and iron separated through
A magnet
40
Parts of blood are separated through
Centrifuge
41
Sulfur and salt are separated through
Filter
42
Granite can be pink or black depending on the ______of feldspar, Mika, and quarts
Ratio
43
What is not true about solutions
They appear to be more than one substance
44
The process in which particles of substances separate and spread evenly through mixture is known as
Dissolving
45
In a solution the _______is the substance that is dissolved in the ______ is the substance in which it is dissolved
Solute, solvent
46
Salt is _______ in water because it dissolves in water
Solute
47
When 2 gasses or two liquids form a solution, the substance that is present in the largest amount is the
Solvent
48
A solid solution of metals or nonmetals dissolved in metals is an
Alloy
49
What can particles in solution not do because they're so small
They cannot settle out, they cannot scatter light, and they cannot be removed by filtering
50
A measure of the amount of solute dissolved in a solvent is called
Concentration
51
What is the difference between a dilute solution and a concentrated solution
Dilute less concentrated solute | concentrated more concentrated solute
52
The ability of a solute to dissolve in a solvent at a certain temperature and pressure is called
Solubility
53
In a mixture the _________of the substances doesn't change
Identity
54
Mixtures are separated through _________changes
Physical
55
Solubility of gases in liquids often _______ as temperatures rise
Decreases
56
Solubility of solids and liquids often ______ as temperatures rise
Increases
57
Q:The particles in both solution and a collide
A:D. Can pass through a finer filter 
58
Q:A substance that dissolves in a solvent 
A:Solute
59
Q:how could a sugar cube be dissolved more quickly?
A:Cool the water
60
Q:which of the following is not a reason that compounds are considered pure substances?
A:they can be separated by physical methods 
61
Q: Elements join in a specific mass__________to form a compound
A:Ratio 
62
Q:when element form mixture the keep their _____ ______
A:original properties 
63
Q:what is a solid solution of a metal or nonmetal dissolved in 
A: alloy
64
Q:what is a solid solution of a metal or nonmetal dissolved in another substance
A:alloy
65
Q:a collide has the properties of a solution and ___________
A: suspensions
66
Q:particle of two or more substances distributed evenly among each other form a(n)_________
A:solution 
67
Q:ability of ones substance to dissolve in another at a given temperature and pressure
A:solubility 
68
Q:compound used by plants during photosynthesis
A:Carbon dioxide 
69
Q:bacteria make compounds from _________ in the air. 
A:nitrogen 
70
Q:the flammability of a substance
A: A. Chemical property 
71
Q:process that separates mixtures based on the boiling point of the components 
A:distillation 
72
Q:compounds also known as table salt
A:sodium chloride
73
Q:a mixture of liquids can be separated by __________
A:distillation 
74
Q:a steel crowbar is an example of an ____________. 
A:alloy

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