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Chem Test 2 Flashcards

1
Q

Beakers

A

Hold solids or liquid that do not release gas when reacted or splatter when heated or stirred. There are five different sizes.

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2
Q

Flask

A

Hold solids or liquids that release, gas or splatter when reacted. has a skinny neck.

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3
Q

Graduated cylinder

A

Used to measure the volume of liquids

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4
Q

Test tube

A

Tubes that hold things for science

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5
Q

Test tube rack

A

Holds five test tubes in a row

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6
Q

Test tube brush

A

Used to clean test tubes

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7
Q

Rubber stoppers

A

Used to contain spillage or close graduated cylinders, and test moves

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8
Q

Spot plates

A

Used for small scale reactions at one time

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9
Q

Watch glass

A

Used to hold a small amount of substance

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10
Q

Glass plates

A

Give surface for semi micro experiments

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11
Q

Scopula

A

Used to pick up powdered materials, stirring, mixing and blending

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12
Q

Glass stirring rod

A

To mix ionic solids

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13
Q

Forceps

A

Used to pick up small things

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14
Q

Beaker tongs

A

To move beakers containing liquids

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15
Q

Evaporating dish

A

Used for the heating of stable, solid compounds and elements

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16
Q

Crucible tongs

A

Used to pick up hot objects not beakers

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17
Q

Bunsen burner

A

Used to heat liquids and solids

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18
Q

Strikers

A

Used to light Bunsen burner

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19
Q

Ring stands

A

Provide a stable elevated platform for reactions

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20
Q

Utility clamps

A

Used to secure things to rings stand

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21
Q

Fire screen pad

A

A wire mat for placing hot items. Can be used on iron ring to heat glass wear

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22
Q

How to get Celsius from Fahrenheit

A

C=5/9(F-32)

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23
Q

how to get Fahrenheit from Celsius

A

F = 9/5C +32

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24
Q

How to get kelvin from Celsius

A

K = C + 273

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25
How many units of natural matter are there? (Elements)
There are 92 natural units of matter (elements)
26
What is the simplest form of matter?
Element
27
What contains two or more elements chemically combined?
Compound
28
A physical blend of two or more components
Mixture
29
What occurs when the look changes but not the chemical make up
Physical change
30
What occurs when a substance changes into something new?
Chemical change
31
What is the law of conservation?
During any chemical reaction, the mass of the product is always equal to the mass of the reactants
32
What is the law conservation of mass?
A fundamental principle of classical physics that matter cannot be created nor destroyed in an isolated system
33
What is an atom?
An Adam can no longer be divided or reduced
34
What is an atom?
An Adam can no longer be divided or reduced
35
What is Dalton’s theory
All matters composed of atoms. all atoms cannot be subdivided, created, or destroyed in ordinary chemical reactions
36
Who used cathode ray tubes
JJ Thomson
37
What is Thomas atomic model?
Thomas believe that electrons were like plums embedded in a positively charged pudding so it’s called the plum putting model
38
Who coined the term nucleus?
Rutherford
39
Who discovered neutrons
Chadwick
40
What are the two regions that are composed of an atom?
The nucleus and the the electron cloud
41
What is a particle also called
Quark
42
What is the mass number?
Number of protons and neutrons in the nucleus
43
What is an atomic number?
Number of protons in nucleus
44
What is the symbol for hydrogen?
H
45
What is the symbol for lithium?
Li
46
What is the symbol for sodium?
Na
47
What is the symbol for potassium?
K
48
What is the symbol for rubidium?
Rb
49
What is the symbol for cesium
Cs
50
What is the symbol for francium?
Fr
51
What is the symbol for beryllium?
Be
52
What is the symbol for magnesium?
Mg
53
What is the symbol for calcium?
Ca
54
What is the symbol for strontium?
Sr
55
What is the symbol for barium?
Ba
56
What is the symbol for titanium?
Ti
57
What is the symbol for iron?
Fe
58
What is the symbol for nickel?
Ni
59
What is the symbol for copper?
Cu
60
What is the symbol for silver?
Ag
61
What is the symbol for gold?
Au
62
What is the symbol for zinc?
Zn
63
What is the symbol for mercury?
Hg
64
What is the symbol for boron?
B
65
What is the symbol for aluminum?
Al
66
What is the symbol for carbon?
C
67
What is the symbol for nitrogen?
N
68
What is the symbol for phosphorus?
P
69
What is the symbol for oxygen?
O
70
What is the symbol for sulfur?
S
71
What is the symbol for chlorine?
Cl
72
What is the symbol for iodine?
I
73
What is the symbol for helium?
He
74
What is the symbol for neon?
Ne
75
What is the symbol for uranium?
U

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