Matter
anything that has mass and takes up space
matter
solid to liquid
melting
found in the nucleus of an atom and has a positive charge
protons
found in the nucleus of an atom and is neutral
neutron
color, smell, taste, texture are examples of
physical property
states of matter
solid, liquid and gas
liquid to solid
freezing
found circling the nucleus of an atom and has a negative charge
electron
two or more substances that are not chemically combined with each other and can be separated by physical means.
mixtures
an apple reacts with air is called
rot
particles are packed tightly together
solid
evaporation/boiling
atomic number of an atom equals to
#of protons or #number of electrons
to differentiate homogenous from heterogeneous scientists ask this question
is it uniform though out?
metal reacts with air and overtime gets less bright; this chemical property is called
tarnished
indefinite shape and definite volume
liquid
gas to solid
deposition
atomic mass (mass number) of an atom equals
neutrons PLUS protons
to separate homogenous mixture from a pure substance, scientists ask this question
can it be separated by physical means?
4 examples of chemical properties are
tarnish, corrode, fire (burn, blow up), rust, rot
oxygen has ____________ volume and __________ shape
indefinite, indefinite
solid to gas
sublimation
atomic mass (mass number) of an atom is 4. Number of protons equals 2. Number of neutrons are_____________
2
to separate element from compound, scientists ask this question
can it be separated by chemical means?
physical property that explain how metal can be stretched into wires or hammered into sheets are called
ductility; malleability