WorksheetsChemistry 1 Semester 1 Final Review 24-25
Total questions: 38
Worksheet time: 3hrs 10mins
The factor being tested in an experiment is called the
control
chemical
variable
unknown
How many significant figures are in the measurement 0.082010 mm?
2
3
5
7
The equation 'mass/volume' is for finding
density
molarity
molar mass
volume
Which is an example of a chemical change?
sugar dissolving in tea
ice cubes melting
trees being cut into logs
milk fermenting into cheese
Which of the following does NOT indicate a chemical change is occurring?
gas released
heat released
precipitate forms
melting
In the figure shown, what is the name for the curved line drawn in the picture that forms when liquids are placed in a graduated cylinder?
curve
cohesion
meniscus
variable
In the figure shown, how should the volume reading for the liquid be recorded?
21.7 mL
27 mL
21.70 mL
21.20 mL
When 15.9 g of silver is added to a graduated cylinder containing 30.0 mL of water. The water level rises to the 31.5 mL mark. From this information, calculate the density of silver.
15.9 g / 1.5 mL = 10.6 g/mL
15.9 g / 31.5 mL = 0.505 g/mL
1.5 mL/15.9 g = 0.0943 mL/g
15.9 g/30.0 mL = 0.53 g/mL
On the periodic table, groups are the
horizontal rows
vertical columns
What charge does an atom have?
zero
negative one
positive two
negative three
What charge does a proton have?
zero
negative one
positive one
positive two
The atomic number of an element tells you how many ____ are in the nucleus.
protons
electrons
neutrons
energy levels
During the scientific method, scientists will form a ______, which is a testable explanation to a question.
observation
hypothesis
conclusion
research question
How many protons, neutrons, and electrons (in that order) are in the isotope as shown?
34, 29, 29
29, 34, 29
29, 63, 34
63, 29, 34
A region around the nucleus of an atom where there is a high probability of finding the electron is an
atom
quantum number
orbital
energy level
What element is this? 1s² 2s² 2p6 3s² 3p64s²
potassium
sodium
calcium
argon
Which sublevel can hold a maximum of 14 electrons?
s
p
d
f
What is this element's outermost (highest) energy level? 1s² 2s² 2p 3s² 3pº 4s²
1
2
3
4
How many valence electrons does this element have? 1s² 2s² 2p 3s² 3pº 4s²
1
2
3
4
What is the density of a metal with a mass of 95.2 g and a volume of 11.4 mL?
0.233 g/mL
0.120 g/mL
8.35 g/mL
83.8 g/mL
Atoms that have the same atomic number but different mass numbers, due to a different number of neutrons are called
atoms
isotopes
ions
molecules
What is this piece of equipment called?
iron ring
ring stand
metal spatula
test tube stand
What is the name of this piece of equipment?
flask
beaker
test tube
graduated cylinder
What is the name of this piece of equipment?
beaker
flask
graduated cylinder
test tube
The number of ______ is the mass number and identifies the specific isotope.
protons + neutrons
protons
neutrons
protons + electrons
What is the atomic number of an element with 17 protons?
16
17
18
19
What is the chemical symbol for the element with atomic number 6?
C
O
N
H
According to Boyle's Law, what happens to the pressure of a gas if the volume is decreased while the temperature remains constant?
The pressure decreases
The pressure increases
The pressure becomes zero
The pressure remains the same
Which of the following equations represents Charles's Law?
PV = nRT
P1/T1 = P2/T2
or
P1T2 = P2T1
V1/T1 = V2/T2
or
V1T2 = V2T1
P1V1 = P2V2
What is the process called when a nucleus splits into two or more smaller nuclei, along with the release of energy?
Transmutation
Fusion
Fission
Radioactive decay
Which type of radiation consists of helium nuclei and is the least penetrating?
Alpha radiation
Neutron radiation
Beta radiation
Gamma radiation
What is the term for the time required for half of the radioactive atoms in a sample to decay?
Half-life
Decay constant
Radioactive period
Decay time
What is the electron configuration of an element with atomic number 10?
1s² 2s² 2p³
1s² 2s² 2p⁵
1s² 2s² 2p⁴
1s² 2s² 2p⁶
Which of these diagrams represents a mixture containing 1 element and 2 compounds?
gold, silver, iron
zinc, chlorine, hydrogen
water, zinc, gold
Zinc, sodium chloride, water
How many significant figures does the following measurement have?
3.050 seconds
A student separates three components of a mixture and obtains the following masses:
Component A = 21.8 g
Component B = 27.3 g
Component C = 35.1 g
What is the percent, by mass, of component C?
84.2 %
25.9 %
41.7%
32.4%
Which of these shows the correct dimensional analysis to convert 13.5 MOLES of Mg to GRAMS of Mg?
Li + Be → B represents a
Chemical change
nuclear change
physical change
no change
