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WorksheetsChemistry Fall Semester Exam Review
Total questions: 40
Worksheet time: 40mins
Which of these is NOT safe to do in a lab?
Check equipment for any cracks.
Tie hair back and wear close-toed shoes.
Wear goggles, gloves, and an apron.
Leave a fire unattended to go get materials.
Which glass equipment would be able to get the most accurate measurement of volume?
Beaker
Graduated Cylinder
Flask
Test Tube
The unit for mass is...
Liters
grams
meters
seconds
How many sigfigs does this number have? 0.04070
2
3
4
6
When the particles of a substance are packed tightly together in a lattice structure, they are in what state of matter?
Solid
Liquid
Gas
Plasma
Which best describes the motion of particles in a gas?
Low energy particles stay close together
High energy particles stay close together
High energy particles move far apart
Low energy particles move far apart
Which best describes the properties of a liquid?
Changes shape, but not volume
Changes volume, but not shape
Changes shape and volume
Does not change shape or volume
It is really hard to get a liquid like maple syrup to flow. This resistance to flow is called...
Buoyancy
Density
Viscosity
Gravity
What is the density of a substance that has a mass of 20g and a volume of 5mL?
0.25g/mL
4g/mL
25g/mL
100g/mL
If you add more and more water into a cup, the volume of the cup changes. This means that volume is ...
an intensive property
an extensive property
As you add more water into a cup, the color of the water does not change. This means that color is...
an intensive property
an extensive property
As you add more water into a cup, the density does not change. This means that density is...
an intensive property
an extensive property
Which of these is an extensive property?
Temperature
Mass
Density
Conductivity
Which of these is NOT a mixture? (Choose all that apply)
Oxygen (O2)
Water (H2O)
Salt Water (NaCl + H2O)
Iron and Sand (Fe + SiO2)
Which of these is NOT an element?
Iron (Fe)
Salt (NaCl)
Water (H2O)
Oxygen (O2)
How do you find the average atomic mass of an element?
Multiply the masses by their percentages, then add up all of the answers.
Add all the masses together, then divide by the number of masses.
Add all the masses together, add all the percentages together, then divide the mass by the percent.
Multiply all the masses, multiply all the percentages, then add them up.
What kind of charge does a neutron have?
Positive
Negative
Neutral
Which of these is not part of the nucleus?
Protons
Neutrons
Electrons
Which of these has a different mass from the others?
Protons
Neutrons
Electrons
The number above an element's symbol on the Periodic Table tells you the number of protons. This number is called...
the mass number
the atomic number
the group number
the period number
What is the mass of an element that has 8 protons, 7 neutrons, and 8 electrons??
15amu
16amu
23amu
56amu
The number for atomic mass is the same as...
The number of protons and neutrons in an atom.
The average mass of all isotopes of an element.
The molar mass of an element.
All of the above.
Electronegativity increases when elements have...
Less energy levels and more nuclear charge
Less energy levels and less nuclear charge
More energy levels and more nuclear charge
More energy levels and less nuclear charge
Because electronegativity means the ability to attract electrons, which group of elements has little to no electronegativity?
Group 1 Alkali Metals
Group 2 Alkaline Earth Metals
Group 17 Halogens
Group 18 Noble Gases
Francium has the most energy levels possible, but the least nuclear charge for all elements with 7 levels. Therefore, Francium has the biggest...
electronegativity
ionization energy
atomic radius
Hydrogen and Helium have the least number of energy levels possible, but Helium has 2 protons, so it has more effective nuclear charge. This means that...
Hydrogen has a bigger atomic radius than Helium
Helium has a higher ionization energy than Hydrogen
Helium has a higher electronegativity than Hydrogen
Hydrogen has a bigger atomic mass than Helium
What is the electron configuration for Silicon?
1s2, 2s2, 2p2
1s2, 2s2, 2p6
1s2, 2s2, 2p6, 3s2, 3p2
1s2, 2s2, 2p6, 3s2, 3p6
Which element has the electron configuration 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d2?
Na
K
Ti
Cu
In order to be stable all atoms want to have how many valence electrons?
1
2
8
10
Magnesium has what ionic charge?
+1
-1
-2
+2
If Magnesium is giving 2 electrons, then it would most likely bond with...
An element that also gives 2 electrons
An element that takes 2 electrons
An element that gives 6 electrons
An element that takes 6 electrons
If an element has 7 valence electrons, this means that...
It wants to take 1 electron
It will have an ionic charge of -1
It is in Group 17 (Halogens) on the Periodic Table
All of the above.
What is the name of the ionic compound FeBr2?
Iron Bromide
Iron Bromine
Iron (II) Bromide
Iron Bromine (II)
The Roman Numeral (III) in a compound like Chromium (III) Oxide means that...
The Chromium is giving away 3 valence electrons
The Chromium has an ionic charge of +3
The Oxygen will have a subscript of 3
If you are given a certain number of particles, and you need to find their mass, you need to...
multiply by (6.02x10^23), then divide by the molar mass.
divide by (6.02 x 10^23), then multiply by the molar mass.
multiply by the molar mass, then multiply by (6.02 x 10^23)
divide by the molar mass, then divide by (6.02 x 10^23)
How do you find how many particles are in 12 moles of Lithium?
12 x 7 x (6.02 x 10^23)
12 / 7 x (6.02 x 10^23)
12 / (6.02 x 10^23)
12 x (6.02 x 10^23)
How would you find the molar mass of water (H2O)?
1 + 8 = 9g
1 + 1 + 8 = 10g
1x2 + 16 = 18g
1 + 16 = 17g
Which of the following is true of both metallic compounds AND ionic compounds?
They contain a metal
They have a high melting point
They contain a non-metal
They are malleable and bend easily
They are usually solids
If we want Zinc to form a metallic bond, which element could we bond it with?
Copper (Cu)
Selenium (Se)
Chlorine (Cl)
Sulfur (S)
The sea of electrons in a metallic bond causes metallic compounds to...
have high luster (shiny)
be good conductors of heat and electricity
have a low melting point
be brittle and easy to break
