Chemical Vs Physical Properties 2 Question Preview (ID: 10523)
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How will the mass of a rusted iron nail compare with the mass of the same nail before it rusted?
a) The two masses will be the same.
b) It depends on whether or not the nail has rusted all the way through.
c) The unrusted nail with have the greater mass.
d) The rusted nail will have the greater mass.
What must occur for a process to be a chemical reaction?
a) The process must involve a change in mass.
b) The reactants and products will have different chemical properties.
c) There must be more products than reactants.
d) The process must involve a change in volume.
In the chemical reaction in which carbon, hydrogen and oxygen absorb heat and combine to form carbon dioxide and water which of the following is considered to be a reactant?
a) heat
b) carbon dioxide
c) oxygen
d) water
A measure of how much pulling, or tension, a material can withstand before breaking is-
a) hardness
b) malleability
c) tensile strenght
d) brittleness
An engineer is searching for a material to develop a new material to develop a new
a) high hardness, high elasticity, high brittleness
b) high brittleness, low hardness, low elasticity
c) low brittleness, high hardness, high elasticity
d) low elasticity, high brittleness
Rubber is unusual in that it shrinks or contracts when heated. Warming a rubber ball will-
a) decrease its density.
b) decress its mass
c) increase its density.
d) cause its volume to remain the same.
When you eat an apple, the process of digestion involves-
a) Physical change only.
b) Phase change.
c) Physical and chemical change.
d) Chemical change only.
In which of the following situations does water undergo a change in physical properties?
a) The bathroom fills with steam when you take a hot shower.
b) (A) and (B) only
c) Water is broken down to yield H2 and O2.
d) The neighbor\'s pond freezes over in winter.
Which of the following is a chemical property of water?
a) Sugar dissolved in it.
b) It is composed of two hydrogen atoms and one oxygen atom.
c) It has a boling point of 100C.
d) It is a colorless liquid.
Which of the following is a chemical change?
a) Cutting.
b) Melting
c) Rusting.
d) Bending.
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