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Trimester 1 Review
What is an isotope?
Complete the nuclear equation
Trimester 1 Review
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1
Complete the nuclear equation
B
A
D
C
2
What is an isotope?
FAKE WORD
An atom of the same kind with different amount of electrons
An atom of the same kind with a different amount of protons
An atom of the same kind with different amount of neutrons
3
The Law of Conservation of Mass states:
If you don't conserve mass you can go to jail for 3-5 years
Mass CAN be created or destroyed
Mass Can NOT be created or destroyed
Save Your Money by turning off the lights
4
What did Ernest Rutherford discover about atoms?
That atoms have positively charged particles floating about
That alpha particles cannot pass through atoms
That they are not mostly empty space
That they have a positively charged nucleus
5
An atom that has lost or gained electrons.
Protons
Covalent Bonds
Ion
Ionic bonds
6
Distillation is
A process that separates based on boiling point.
A process that separates based on the size of particles.
7
He proposed the plum pudding model.
R.A. Millikan
J.J. Thomson
N. Bohr
J. Chadwick
8
Avogadros Number is
8.314×1022
6.023×1022
8.414×1023
6.022×1023
9
What are the three types of radioactive decay?
alpha, beta, gamma
alpha, beta, fusion
alpha, beta, omega
alpha, fission, fusion
10
A sieve (strainer) can be used to separate ...
solutions
mixtures of different sizes
peanut butter and jelly
green peas and yellow beans
11
Spontaneous nuclear decay.
Alpha decay
Beta decay
Nuclear breakdown
Radioactivity
12
Name this piece of lab equipment.
Glass collecting tube
Graduated cylinder
Glass tubes
Test tubes
13
What is a difference between compounds and mixtures?
Compounds separate chemically, mixtures can be separated physically
Compounds are made of mixtures.
It's just complicated, okay?
Compounds separate physically, mixtures can separate chemically
14
How many moles is 40 grams of Carbon?
3.33 moles
0.33 moles
2.43 moles
5.00 moles
15
Mixtures are classified as either
mixtures
Homogeneous
Heterogeneous and Homogeneus
Solutions
16
How much mass does Co have after 2 half lives?
5 g
0 g
0.625 g
2.5 g
17
Is this a physical or chemical change?
Chemical
Physical
18
Which element has +8 protons?
Hydrogen
Tungsten
Nitrogen
Oxygen
19
This lab safety symbol warns us that ______.
materials being used are flammable.
chemicals are being used.
you need to use a fire extinguisher.
fire is hot.
20
In an experiment, the variable changed on purpose
constant
independent variable
dependent variable
control
21
Charles law states that
constant pressure = temp inversely proportional to volume
contact temp= volume inversely proportional to pressure
constant pressure = volume proportional to temp
constant temp means volume stays the same
22
The most basic unit of a chemical element is the ?
atom
element
molecule
cell
23
The measurement of this graduated cylinder is
20 ml
24 ml
25 ml
15 ml
24
Filtration, distillation, evaporation or dissolution are types of...
Techniques to make homogeneous mixtures
Techniques to separate mixtures
Techniques to make solutions
Techniques to make heterogeneous mixtures
25
In an atom, there are protons, neutrons, and...?
Negatons
Tendons
Electrons
Ectolons
26
What is a difference between elements and compounds?
All of the above
Elements are atoms from the periodic table.
Elements are the simplest form of matter.
Compounds are made of multiple elements.
27
what must remain constant when boyles law is applied?
Temperature
volume
pressure
28
What experiment did Rutherford use?
Copper experiment
Gold foil experiment
Silver foil experiment
Gold experiment
29
How many electrons does Nitrogen have?
14
13
.007
7
30
How many milliliters in 3 liters?
2,000
100
1,000
3,000
31
What is an element?
building blocks of matter
A pure substance made up of two or more elements
classification of an element based on luster,conductivity, and malleability
A pure substance made of one element represented by a chemical symbol
32
Name this piece of lab equipment
Graduated cylinder
Erlenmeyer flask
Test tube
Florence flask
33
The dependent variable in an experiment is:
The variable you measure
The varialbe that you keep the same
The variable you change
34
What does KMT assume about the size of particles and their separation?
large particles, close together
tiny particles, close together
tiny particles, far apart
large particles, far apart
35
When writing a nuclear reaction...
Atomic number and mass must be conserved
Atomic number must be conserved
Atomic mass must be conserved
None of the above
36
Identify the dependent variable in this experiment.
The amount of sunlight.
The height of the plant.
The type of soil.
The type of plant.
37
Which is not appropriate lab safety
tasting the lab materials
wearing lab coat
reading all directions
wearing goggles over eyes
38
What occurs during beta decay?
loss of 2 protons and 2 neutrons
loss of one electron and gaining of one proton
loss of 4 neutrons and 2 protons
loss of energy
39
Find the average atomic mass of Chlorine.
40.51 amu
34.48 amu
33.78 amu
35.45 amu
40
Calculation question
626L
861L
198L
23.4L
41
Look at the heating curve, where would vaporization occur?
B-C
D-E
C-D
E-F
42
How many neutrons are in the nucleus of the following atom:
47
155
108
61
43
A substance changes from a liquid to a gas in this phase change.
Condensation
Evaporation
Vaporization
Sublimation
44
A scientific hypothesis must be
correct
able to be tested
able to be manipulated
able to be controlled
45
Best used to hold a hot beaker
Ring Clamp
Lab Tongs
Test Tube Clamp
Beaker Tongs
46
What is a Hypothesis?
Involves series of ordered steps
a tentative explanation for observations or a phenomenon
An answer
A question
47
Can this problem be solved with only one conversion factor?
no
yes
48
What is the molar mass of FeCl
3
?
160 g/mol
162.3 g/mol
89.3 g/mol
133.3 g/mol
49
Is this a physical or chemical change?
Physical
Chemical
50
how do you find the number of protons???
atomic number - mass
Atomic number
mass - atomic number
Atomic mass
51
What occurs during alpha decay?
loss of one electron and gaining of one proton
loss of energy
loss of 4 neutrons and 2 protons
loss of 2 protons and 2 neutrons
52
What is the molar mass of CaSO4?
256 g/mol
198.2 g/mol
174.6 g/mol
136.1 g/ mol
53
To improve the reliability of these results, the student should
revise the hypothesis
conclude that light is necessary for seed germination
conclude that darkness is necessary for seed germination
repeat the experiment using a larger number of seeds
54
Look at the heating curve, where would you find a gas?
C-D
D-E
B-C
E-F
55
which is high precision but low accuracy
c
b
d
a
56
What is a difference between compounds and mixtures?
Mixtures can be easily separated using physical means.
Compounds are made up of mixtures.
Mixtures are compounds bonded together.
Compounds can be easily separated using physical means.
57
what kind of Nuclear Decay is this?
Beta Decay
Positron Emission
Electron Capture
Alpha Decay
58
Calculation question
4000Pa
25000Pa
1000Pa
160Pa
59
What charge do protons have?
None
Positive
Negative
Neutral
60
how many moles are in 22 grams of argon?
.5 moles
.75 moles
878.856 moles
87 moles
61
In KMT, gas collisions are
inelastic
elastic
kelvin
increasing in energy
62
How much mass does Co have after 1 half life?
0 g
10 g
5 g
20 g
63
Who developed the Atomic Theory?
James Chadwick
Ernest Rutherford
Robert Millikan
John Dalton
64
What is the molar mass of Cl
2
80 g/mol
35 g/mol
70 g/mol
71 g/mol
65
What is nuclear fission?
When the atomic nuclei combine.
when the atomic nuclei decays.
The splitting of atomic nuclei.
when an atom explodes
66
History of the Model of the Atom Question Coming Up!
3
2
1
4
67
What is the purpose of this Flask?
Used to hold a liquid during heating.
A container for mixing and holding chemicals.
Measuring one specific volume of liquid.
Gives approximate measurements of volume.
68
Is this a heating or a cooling curve?
Heating
Neither
Cooling
Both
69
How many grams are in 88.1 moles of magnesium?
3.5 grams
3.6247 grams
2138.84 grams
20.3884 grams
