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Chemistry Final Exam Review
Which is NOT an example of a particle in chemistry?
New Molarity 3
Chemistry Final Exam Review
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1
New Molarity 3
7.2
7.5
6.7
1.2
2
Which is NOT an example of a particle in chemistry?
A molecule of water
A molecule os sodium ion
An atom of carbon
The compound methane
3
pH stands for
People of Hawaii
Potential of hydrogen
Power of Hocotate
Phosphorus and hydrogen
4
Percent Composition of HCl(36.46g)
H= 56% Cl= 44%
H= 5% Cl= 95%
H= 13% Cl= 87%
H= 3% Cl= 97%
5
From the equation below, which one is Bronsted Lowry base?
H2O
NH3
6
What is the sign for molality?
mols
mol
m
M
7
What are the two things you must have to get the percent composition?
Molar mass of elements, compound
Molar mass, atomic number
Elements, compounds
Atomic number, elements
8
Percent Composition of NaCN
46% Na, 24% C, 29% N
52% Na, 22% C, 26% N
33.3% Na, 33.3% C, 33.3% N
45% Na, 24% C, 30% N
9
In a gas, the particles are...
Closely packed together
None of the above
Spread further apart
Spread slightly apart
10
Define Solute
A mixture of 2 or more substances
Part of the solution that dissolves the solute
Part of the solution that is being dissolved
11
What is the pH of lemon?
6
2
5
4
12
What is a solution in chemistry?
I don't know!
The answer to a problem
Something you make
A mixture of a solvent and a solute
13
Acids have a pH range from
Above 7
7
Below 7
14
What is the percent composition of Calcium in Calcium Nitrate?
31.22%
68.78%
42.24%
24.42%
15
The sugar in tea...is it a solute or solvent?
solvent
solute
16
Bases have a pH of...
3
8
<7
>7
17
how do you calculate molality
mol of solvent/kilograms
mol of solute/miligrams
mol of solution/kilograms
mol of solute/kilograms
18
New Molarity 4
3.2
2.01
3.79
2.9
19
Fill in the blanks
1 = Denitrification; 2 = Nitrogen Fixation
1 = Denitrification; 2= Lightning
1 = Nitrogen Fixation ; 2 = Denitrification
1 = Decomposition; 2= Denitrification
20
A pH of 7 is....
Basic
Neutral
Acidic
21
Which one of the following is an example of a gas solute in a liquid solvent?
carbonated drinks
air
water vapour in air
mothballs in air
22
what is pH of blood?
8
7
9
6
23
What affects the solubility of a solute?
Surface area
Stirring
Temperature of solvent
All answer choices
24
A solvent is:
insoluble
a polar substance
a solution
the substance in which the solute dissolves.
25
A Bronsted Lowry acid is a
hydrogen ion
proton acceptor
strong
proton donor
26
Air is an example of which solute and solvent?
gas; liquid
gas; gas
gas; solid
liquid; solid
27
In heterogeneous mixtures you can see the different parts that make up the whole.
True
False
28
Which is NOT an example of a particle in chemistry?
A molecule os sodium ion
The compound methane
An atom of carbon
A molecule of water
29
Acid solutions have a ph of
0 - 6.9
7.1 - 14
0 - 8.1
30
Strong bases have a pH of?
4-6
1-3
8-10
11-14
31
The pH scale was invented by Svante Arrheniu
True
False
32
Unit for molarity
m
M
g/dm3
g/cm3
33
Define molality
No
The number of moles of solute per litre of solution
The ability of an atom to form an ionic bond
The number of moles of solute per kilogram of solvent
34
Atoms have three parts
Protons, electrons and neutrons
Proton, neutron and electricity
Proton, nucleus and electron
35
Define Percent Composition
The amount of solute in a solution
The percentage by mass of each element in a compound
A liquid mixture in which the minor component is uniformly
36
Chemistry is the study of......
Implosions
Explosions
Chemicals
Bio-Chemicals
37
New Molarity 2
0.98 M
0.70 M
0.20 M
11.2 M
38
Molarity is
moles per unit vol (mm3)
moles per unit vol (cm3)
moles per unit vol (m3)
moles per unit vol (dm3)
39
From the equation below, which one is Bronsted Lowry acid?
H2O
NH3
40
Molality is expressed as the number of moles of a solute in a ___
kilogram of a solvent
kilogram of a solution
liter of solvent
liter of solution
41
Calculate the percent composition of sodium in sodium hydroxide(NaOH)
34.3%
96.5%
75.8%
57.5%
42
Scientists use molarity to
Calculate the solution
Describe concentration in chemistry
Calculate the molarity
Describe composition
43
What is the percent composition of oxygen in water?
50%
33%
89%
11%
44
In the Magic School Bus, why was baking similar to chemistry?
It was not
Mixing different parts together to make something new
Baking involves food and so did our root beer floats
There is baking soda always involved
45
Calculate the molarity of the following acid solutions.
1.0 mol dm-3
0.1 mol dm-3
1.0 g dm-3
10.0 g dm-3
46
A Bronsted Lowry base is defined as a:
proton acceptor
H+
OH-
proton donor
47
What did the Bronsted Lowry theory do?
Explained more detail into the arrhenius defenition.
The broncos are trash.
He invented the punnet square.
Explained more detail into the salt defenitions.
48
What is the percent composition of hydrogen in Water?
12%
11.11 %
10%
49
Which one is the solute?
Glass
Water
Spoon
Salt
50
Molality
Moles of solute/L of solution
L of solute/Moles of abolition
Kg of solute/Moles of solvent
Moles of solute/kg of solvent
