pure substances 1
substance made from 2 or more simpler substances and it can be broken down into those simpler substances.
compound
a substance made up of only 1 type of atom
element
ID which is the homogeneous mixture:
pasta salad
iced tea
muddy water
pizza
iced tea
ability to produce a change in the composition
of matter
chemical property
which is NOT a chemical change?
a rusted bike
wood burning
digestion
a plant growing
plant growing
a substance that cannot be broken down into simpler substances
element
matter that has a fixed, uniform composition, so every sample of a substance has the same properties
pure substance
ID which is a heterogeneous mixture:
gasoline
coffee
vinegar
carbonated water
carbonated water
any characteristic of a material that can be observed or measured without changing the composition of the substances in the material
physical
which is not a physical property?
gold is malleable
lead is heavy
sulfur is yellow
oxygen is flammable
oxygen is flammable
mixture where the substance are so evenly distributed it is difficult to distinguish one substance in the mixture from another
homogeneous mixture
type of substances made of different components that are always joined in a fixed proportion
compound
which type of mixture is the only homogeneous one?
solution
how easily a substance combines chemically with other substances
reactivity
the ratio of mass/volume
density
combination of two or more substances in any proportion.
mixture
mixture in which the parts are noticeably different from each other
heterogeneous
which type of mixture is able to scatter light, separate into layers, and be filtered?
suspension
which is NOT a physical change:
pouring chocolate into a mold to make candy
burning paper
crumpling a sheet of aluminum foil
cutting dough into pasta
burning paper
the ability to burn in the presence of oxygen
flammabilty
what are the 2 types of pure substances
elements and compounds
substances that when combined, they do not combine chemically to form a new substance
mixture
what are the 3 categories of mixtures?
solution
colloid
suspension
which is not a physical property?
density
viscosity
malleability
flammability
flammability
which is not correctly matched?
1-conductivity- the ability to allow heat to flow
2-viscosity -- the resistance to flow
3-hardness - the ability of a solid to be hammered & shaped without shattering
4-melting point- temperature in which a solid becomes a liquid
3 is incorrect...
the term should be MALLEABILITY