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WorksheetsPS Midterm Review
Total questions: 90
Worksheet time: 2hrs 30mins
Is NaCl an element or a compound?
Element
Compound
What is happening at point B is heat is leaving the matter?
melting
freezing
evaporating
condensing
What is happening at point B if heat is entering the matter?
melting
freezing
evaporating
condensing
What is happening at point D as heat is removed?
evaporating
condensing
boiling
melting
What state of matter has the weakest intermolecular forces?
solid
liquid
gas
What state of matter has the strongest intermolecular forces?
solid
liquid
gas
Dry ice changing from solid to gas is called
diffusing
melting
condensation
sublimation
Water vapor changing directly into a solid is called
condensation
evaporation
sublimation
deposition
Which state of matter has indefinite shape and indefinite volume?
Solid
Liquid
Gas
Idaho
Which state of matter has indefinite shape and definite volume?
Solid
Liquid
Gas
Alaska
Which state of matter has definite shape and definite volume?
Solid
Liquid
Gas
Arkansas
Which state of matter has the least energy?
Solid
Liquid
Gas
Wyoming
Which state of matter has the most energy?
Solid
Liquid
Gas
California
Color is what type of property?
Physical
Chemical
Reactivity is what type of property?
Physical
Chemical
What is a sign of a physical change?
Bubbles forming
Color changing
Stretching
Producing heat
What is a sign of a chemical change?
Stretching
Tearing
Compressing
Bubbles
What happens to the atoms of a substance in a physical change?
Atoms get bigger
Atoms change their arrangement and motion
Atoms get smaller
Atoms bond together differently
What happens to the atoms of a substance in a chemical change?
Atoms get bigger
Atoms change their arrangement and motion
Atoms get smaller
Atoms bond together differently
Which of these observations would likely be an indication of a chemical change?
A change in odor when two substances are mixed
A change in temperature when a hot substance is left standing in air
A change in volume as a substance is heated
The disappearance of a liquid as it boils
You mixed two liquids and a precipitate formed, what kind of change occured?
Physical
Chemical
Which of the following is a type of matter?
air in a balloon
electricity running through a wire
both air in a balloon and electricity running through a wire
neither air in a balloon nor electricity running through a wire
Which of the following particles is described as the basic building block of matter?
atoms
compounds
mixtures
pure substances
protons, neutrons, and electrons
Which of the following subatomic particles are located in the nucleus of the atom?
protons and neutrons
protons only
neutrons only
electrons only
protons, neutrons, and electrons
Which of the following BEST describes the location of electrons within the atom?
in an electron cloud around the nucleus
in orbits around the nucleus
outside of the nucleus
in the nucleus
Use the periodic table to answer the following question. Which element has 50 protons?
tin (Sn)
vanadium (V)
cesium (Cs)
carbon (C)
The atomic number of iron (Fe) is 26. What does this tell you about an atom of iron?
An atom of iron has 26 protons.
The sum of protons and neutrons in an atom of iron is 26.
An atom of iron has 26 neutrons.
The sum of protons, neutrons, and electrons in an atom of iron is 26.
Which of the following statements about the masses of subatomic particles is true?
Electrons have very little mass compared to protons and neutrons.
Protons, neutrons, and electrons all have about the same mass.
Electrons have no mass.
Neutrons have very little mass compared to electrons and protons.
Protons and neutrons have very little mass compared to electrons.
Which of the following subatomic particles is electrically neutral?
neutrons
protons
electrons
Which of the following subatomic particles is negatively charged?
electrons
protons
neutrons
What is the significance of valence electrons?
Valence electrons are involved in forming chemical bonds.
Valence electrons contribute significantly to the mass of an atom.
Valence electrons cause an atom to move very rapidly when it is in its gaseous state.
Valence electrons have a different charge than those electrons that are closer to the nucleus.
When two atoms form a chemical bond with one another, which subatomic particles are involved?
electrons
protons
neutrons
Cl or Al?
For metals (groups 1-3), its easier to _____ electrons to have a full outer shell.
gain
lose
share
For nonmetals (grousp 5-7), its easier to _____ electrons to have a full outer shell.
gain
lose
share
The octet rules states that most elements want to have _____ valence electrons.
2
4
6
8
Which two statements are correct about the figure shown?
It is a covalent bond.
Hydrogen atoms loss electrons and Carbon gains the atoms.
It happens on metal and on another non-metal.
The valence electrons are shared by both atoms.
Which two are ionic compounds?
NaCl
HCl
CH4
CaO
_N2 + _H2 --> _NH3
P4+O2 --> P2O3
Al2O3 --> Al + O2
2H2 + O2 --> 2H2O
2H2 + O2 --> 2H2O
Cl2 + 2KI --> I2 + 2KCl
