REVIEW J.U1L2-Atoms And Elements Question Preview (ID: 58648)
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Carbon has an atomic number of 6, an ------ of 12.01, and is represented by the symbol “C.”
a) atomic mass (how 'heavy' it is)
b) atomic number
c) shape
d) buoyancy number
Each element has a unique set of physical and chemical properties. Which answer is NOT true of elements?
a) Oxygen is a gas
b) Copper is a shiny metal
c) Carbon is a brittle solid
d) Oxygen gas cannot burn
Which CLAIM correctly describes atoms?
a) Atoms of all substances have the same chemical properties.
b) Atoms combine to make all the substances on Earth.
c) Atoms are easily destroyed when matter is cooled or heated.
d) Atoms come in different sizes, but most are visible using a simple hand lens.
If Cu (copper) and Ag (silver) are in the same COLUMN on the Periodic Table, which two elements below are most likely to have similar physical properties?
a) copper and zinc
b) gallium and cadmium
c) copper and silver
d) cadmium and indium
Which substance cannot be separated or broken down into simpler substances by chemical means?
a) water vapor
b) gold wire
c) candle wax
d) table salt
What do a wooden chair and a balloon always have in common?
a) Both have the same physical properties.
b) Both are made of atoms.
c) Both are made of the same kind of atom.
d) Both are made of the same number of atoms.
Which of these is smallest?
a) atoms
b) cells
c) matter
d) elements
Which CLAIM correctly states how atoms of copper differ from atoms of aluminum?
a) They are not pure substances.
b) They can be formed by physical changes.
c) They are made up of more than one type of particle.
d) They have different chemical properties.
How are elements organized in the periodic table?
a) by atomic number and properties
b) by abundance in nature and usefulness to humans
c) by atomic mass and melting point
d) by density and date of discovery
You can filter minerals out of water or melt rocks to separate metals from the rock. But a ------ is a material that cannot be physically separated into its parts.
a) mountain
b) pure substance
c) soda
d) garden
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