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WorksheetsChemistry Practice Final 20-21
Total questions: 35
Worksheet time: 18mins
Which of the following is NOT an example of matter?
Air
Light
Water
Smoke
Which of the following is an example of a chemical change?
phase change
burning wood
boiling water
cutting paper
All of the following are physical properties of matter except…
mass
color
melting point
rusting
Which of the following heterogeneous mixture?
steel
trail mix
kool-aid
air
Which state of matter is represented by a fixed shape and a fixed volume?
solid
liquid
gas
plasma
In the atom, which subatomic particle is positive?
neutron
proton
electron
orbital
What part of the atom is responsible for an element’s atomic mass?
neutron
proton
electron
nucleus
Which subatomic particle(s) are found in the nucleus of an atom?
neutron
electron
proton
protons and neutrons
Where are electrons found in an atom?
nucleus
neutron
orbital
proton
What charge does an electron have?
positive
neutral
negative
ion
The element, iron, is represented by what elemental symbol?
fe
FE
Ir
Fe
What is Sodium’s atomic number?
11
23
22.990
12
The atomic number of an element is the total number of which particles in the nucleus?
proton
neutron
electron
proton and electron
An element has an atomic number of 76. The number of protons and electrons in a neutral atom of the element are ____.
152 protons and 76 electrons
38 protons and 38 electrons
76 protons and 0 electrons
76 protons and 76 electrons
If an atom has a charge of -1, it is a(n) _____________.
Cation
Anion
Carbon
Isotope
Isotopes of the same element have different ____.
Numbers of protons
Numbers of neutrons
numbers of electrons
Atomic numbers
How many valence electrons does Chlorine have?
7
17
8
1
What is the rule that states each atom wants to have 8 valence electrons?
Bonding rule
Octet Rule
Periodic Law
Aufbau Principle
An element that conducts electricity well, is ductile, and malleable is likely a ____________.
Metal
Metalloid
Nonmetal
Halogen
Which element is in the same period as Phosphorus?
Carbon
Magnesium
Germanium
Sulfur
The periodic table is organized in a way that elements that are all in the same _________ have similar properties.
Group
Diagonal
Period
Both A & C
As you go down a group, the size of an atom _____________.
Decreases
Increases
Varies
None of the above
Of the elements Pt, V, Li, and Kr, which is a nonmetal?
Pt
V
Li
Kr
Calcium Chloride, CaCl2, is an example of a(n) _________________ compound.
Ionic
Metallic
Covalent
Atomic
What is the formula for Aluminum Oxide?
AlO
Al2O3
AlO3
Al3O
If you wanted to increase the ability of a solute to dissolve in solution, you could....
Agitate (stir) it
Add less solute
Increase temperature
All of the above
A solution is sour, corrosive, conducts electricity and reacts with metal. According to this, the solution is ______________.
Acidic
Neutral
Basic
A solution has a pH of 7. This pH means the solution is _____________.
Acidic
Basic
Neutral
In the chemical equation H2O2(aq) → H2O(l) + O2(g), the O2 is a ____.
Reactant
Product
catalyst
enzyme
What are the coefficients that will balance the skeleton equation below?
AlCl3 + NaOH --> Al(OH)3 + NaCl
1,2,3,1
1,3,3,1
1,3,1,3
3,1,3,1
What is the molar mass of Mg(OH)2?
75.045 g/mol
58.319 g/mol
41.304 g/mol
84.608 g/mol
When pressure of a gas increases, volume of gas _____________.
Increases
Decreases
Remains the same
None of the above
Charles's law states that ____.
the pressure of a gas is inversely proportional to its temperature in kelvins
the volume of a gas is directly proportional to its temperature in kelvins
the pressure of a gas is directly proportional to its temperature in kelvins
the volume of a gas is inversely proportional to its temperature in kelvins
Which functional group is pictured ?
Hydroxyl
carboxyl
amino
carbonyl
Carbon containing compounds are also called __________________ molecules.
inorganic
organic
carbonic
enzyme
