States Of Matter Review Question Preview (ID: 61395)
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Which of the following are transferred or shared when two atoms react chemically?
a) Protons
b) Electrons
c) Neutrons
d) Chemicals
In the periodic table, the rows are called:
a) Periods
b) Groups
c) Families
d) Classes
Which of the following is found farthest from the center of an atom?
a) Nucleus
b) Proton
c) Nuetron
d) Electron
Which sub-atomic particle has a negative charge?
a) Electron
b) Proton
c) Neutron
d) Nulcleus
Which of the following best describes an atom?
a) Protons and electrons grouped together in a random pattern
b) Protons and electrons grouped together in an alternating pattern
c) A core of protons and neutrons surrounded by electrons
d) A core of electrons and neutrons surrounded by protons
The atomic number of an atom is:
a) the number of electrons
b) the number of neutrons
c) the number of protons
d) the number of protons plus the number of neutrons
The mass of individual atoms mainly comes from
a) Electrons and ions
b) Electrons and neutrons
c) Neutrons and protons
d) Neutrons and ions
A single proton has what electrical charge?
a) no charge
b) positive charge
c) negative charge
d) either a positive or negative charge
Which particles have approximately the same size and mass as each other?
a) neutrons and electrons
b) electrons and protons
c) protons and neutrons
d) none - they are all very different in size and mass
The nucleus of an atom consists of:
a) electrons
b) neutrons
c) protons and neutrons
d) protons, neutrons, and electrons
The periodic table is organized by
a) atomic mass.
b) atomic size.
c) atomic number
d) atomic periodicity
The three basic components of an atom are
a) protons, neutrons, and ions
b) protons, neutrons, and electrons
c) protons, neutrinos, and ions
d) protium, deuterium, and tritium
An element is determined by the number of:
a) atoms
b) electrons
c) neutrons
d) protons
What process takes solid CO2 from a solid to a gas?
a) Boiling
b) Melting
c) Sublimation
d) Vaporization
The average distance between molecules always increases during which of the following phase changes?
a) gas to solid
b) liquid to gas
c) gas to liquid
d) liquid to solid
A glass thermometer has a colored liquid inside it. The level of colored liquid rises when the thermometer is placed in hot water. Why does the level of liquid rise?
a) Water molecules are pushed into the thermometer.
b) Heat molecules push the molecules of the liquid downward.
c) Heat causes the molecules of the liquid to get farther apart.
d) The molecules of the liquid break down into atoms and take up more space.
A solid rubber ball sinks when placed in water. What will happen if the ball is cut in half and one of the smaller pieces is placed underwater?
a) The smaller piece will rise.
b) The smaller piece will sink.
c) The smaller piece will stay motionless.
d) The smaller piece will dissolve.
Kamir and Alexis are studying the properties of water. They conducted a variety of experiments to determine its physical and chemical properties. Of the tests the students conducted, which one illustrates a chemical property of water?
a) salt dissolves in water
b) oil and water do not mix
c) pencil shavings float on water and do not dissolve
d) neutral water reacts with carbon dioxide to form an acid solution
An aluminum bar was found to have a mass of 27g. Using water displacement, the volume was measured to be 10 ml. What is the density of the aluminum?
a) 270 g/ml
b) 279g
c) 2.7 g/ml
d) 2.7 g
Silver is a white metal that is an excellent conductor. Silver tarnishes when exposed to air and light. The density of silver is 10.49 g/cm3. The melting point is 962oC and the boiling point is 2000oC. A chemical property of silver is
a) density
b) ability to tarnish in air
c) melting point
d) conductivity.
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