science unit B grade 9 Question and
answers rated A+
Physical properties include: - correct answer ✔luster, color, melting point,
boiling point, hardness, malleability, ductility, crystal shape, solubility,
conductivity and density
Physical properties - correct answer ✔how can we identify it?
Chemical properites - correct answer ✔How does it react to other
substance?
Chemical properties include - correct answer ✔Reaction with acids, Ability,
Reaction with water behavior in air, reaction to heat
Solid to gas - correct answer ✔Sublimation
Gas to solid - correct answer ✔Depostition
Gas to liquid - correct answer ✔condensation
Physical change - correct answer ✔no new substance only the state of the
substance changes
Chemical change - correct answer ✔forms news substance. The new
material has new properties from the original properties.
, Physical change indicate by - correct answer ✔Change of state, shape, A
change in color, the dissolving one substance in another, and reversibility.
Chemical change are indicated by - correct answer ✔Change of color,
change in odor, the formation of as solid [precipate] or a gas [bubbles],
release or absorption of heat energy, a new substance is formed and
irreversibility.
Pure substance - correct answer ✔Is made of only one kind of matter and
has a unique set of properties that sets it apart from any other of matter.
Element - correct answer ✔Is material that cannot be broken down into any
simpler substance.
Compounds - correct answer ✔Two or more elements are combined
Hetergeneous - correct answer ✔You can see the different substances that
make up the mixture
solution - correct answer ✔The different substances that make it up are not
separately visible
Suspension - correct answer ✔Layers are made because these particles can
be easily separated.
Colloid - correct answer ✔These particles are so small that is very difficult to
separate
answers rated A+
Physical properties include: - correct answer ✔luster, color, melting point,
boiling point, hardness, malleability, ductility, crystal shape, solubility,
conductivity and density
Physical properties - correct answer ✔how can we identify it?
Chemical properites - correct answer ✔How does it react to other
substance?
Chemical properties include - correct answer ✔Reaction with acids, Ability,
Reaction with water behavior in air, reaction to heat
Solid to gas - correct answer ✔Sublimation
Gas to solid - correct answer ✔Depostition
Gas to liquid - correct answer ✔condensation
Physical change - correct answer ✔no new substance only the state of the
substance changes
Chemical change - correct answer ✔forms news substance. The new
material has new properties from the original properties.
, Physical change indicate by - correct answer ✔Change of state, shape, A
change in color, the dissolving one substance in another, and reversibility.
Chemical change are indicated by - correct answer ✔Change of color,
change in odor, the formation of as solid [precipate] or a gas [bubbles],
release or absorption of heat energy, a new substance is formed and
irreversibility.
Pure substance - correct answer ✔Is made of only one kind of matter and
has a unique set of properties that sets it apart from any other of matter.
Element - correct answer ✔Is material that cannot be broken down into any
simpler substance.
Compounds - correct answer ✔Two or more elements are combined
Hetergeneous - correct answer ✔You can see the different substances that
make up the mixture
solution - correct answer ✔The different substances that make it up are not
separately visible
Suspension - correct answer ✔Layers are made because these particles can
be easily separated.
Colloid - correct answer ✔These particles are so small that is very difficult to
separate
