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Chemistry: The study of matter
Substance: A single kind of matter that is pure
HELP Chemical Property: Describes the ability to change into different substances
HELP Physical Property: Can be observed without changing into a different substance
Element: Substance that cant be broken down by any chemical or physical means
Atom: From which elements all are made from
Chemical Bond: When atoms combine
Molecule: A group of 2 or more atoms held together by a chemical bond
Compound: Substance that's made up of 2 or more elements
Chemical Formula: Shows elements in coumpound and shows ratios of atoms
Mixture: made up of 2 or more substances that are together
Weight: Is the measure of the force of gravity on you
Mass: The amount of matter in an object
International system of units: Used to describe the properties of matter
Volume: The amount of space that matter occupies
Density: the amount of mass of a material in a given volume
Physical Change: Alters the form or appearance of matter but doesn't turn that substance into another substance
Chemical Change: A chage that produces one or more new substances
Law of conservation of mass: Matter isn't created nor destroyed in any chemical or physical chamge
Tempeture: Is a measure of how hot or cold something is
Thermal Energy: The total energy of all of the particles in a object
Endothermic change: Absorbes energy
Exotherimc Change: Releases energy
Chemical energy: The energy stored in chemical bonds and in between atoms
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