WGU D425 CHEMISTRY GENERAL
STUDY GUIDE
Chemistry - ANS Study of matter
Atoms - ANS Building blocks of matter
Matter - ANS Anything that has mass and takes up space
mass - ANS A measure of the amount of matter in an object
Volume - ANS The amount of space an object takes up
Matter is - ANS Either a pure substance or a mixture
Atom - ANS Basic unit of matter
subatomic particles - ANS protons, neutrons, electrons
Proton - ANS positively charged particle
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
1
, Neutron - ANS A subatomic particle that has no charge and that is found in the nucleus of an
atom
Electron - ANS A subatomic particle that has a negative charge
Elements - ANS any substance that cannot be broken down into simpler substances
periodic table - ANS A table that shows the elements, their atomic number, symbol, and
average atomic mass; elements with similar chemical properties are grouped together.
Compound - ANS A substance made up of atoms of two or more different elements joined by
chemical bonds
Homogenous mixture - ANS A mixture in which substances are evenly distributed throughout
the mixture
heterogeneous mixture - ANS A mixture that is not uniform in composition; components are
not evenly distributed throughout the mix
Homogenous mixture - ANS Has 1 phase/layer
Heterogenous mixture - ANS Has multiple layers
Alloy - ANS A mixture of two or more metals
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
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STUDY GUIDE
Chemistry - ANS Study of matter
Atoms - ANS Building blocks of matter
Matter - ANS Anything that has mass and takes up space
mass - ANS A measure of the amount of matter in an object
Volume - ANS The amount of space an object takes up
Matter is - ANS Either a pure substance or a mixture
Atom - ANS Basic unit of matter
subatomic particles - ANS protons, neutrons, electrons
Proton - ANS positively charged particle
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
1
, Neutron - ANS A subatomic particle that has no charge and that is found in the nucleus of an
atom
Electron - ANS A subatomic particle that has a negative charge
Elements - ANS any substance that cannot be broken down into simpler substances
periodic table - ANS A table that shows the elements, their atomic number, symbol, and
average atomic mass; elements with similar chemical properties are grouped together.
Compound - ANS A substance made up of atoms of two or more different elements joined by
chemical bonds
Homogenous mixture - ANS A mixture in which substances are evenly distributed throughout
the mixture
heterogeneous mixture - ANS A mixture that is not uniform in composition; components are
not evenly distributed throughout the mix
Homogenous mixture - ANS Has 1 phase/layer
Heterogenous mixture - ANS Has multiple layers
Alloy - ANS A mixture of two or more metals
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
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