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Chemistry

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Section 1

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Elements

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1 / 24

Chemistry Science

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Last updated

6 years ago

Date created

Mar 1, 2020

Cards (24)

Section 1

(24 cards)

Elements

Front

A molecule composed of one kind of atom; cannot be broken into simpler units by chemical reactions.

Back

Volume

Front

The amount of space an object takes up

Back

Gas

Front

A state of matter with no definite shape or volume

Back

Atom

Front

All matter is made of these tiny particles

Back

Valence

Front

Where electrons are located - outermost energy level of an atom

Back

collision theory

Front

states that atoms, ions, and molecules must collide in order to react

Back

Matter

Front

Anything that has mass and takes up space

Back

Compounds

Front

2 or more elements chemically combined

Back

Law of Conservation of Mass

Front

Matter is not created nor destroyed in any chemical or physical change

Back

Solid

Front

Definite shape and volume

Back

Neutron

Front

A subatomic particle that has no charge and that is found in the nucleus of an atom

Back

Subatomic

Front

Atoms are made of even smaller ___________________parts

Back

kinetic energy

Front

energy of motion

Back

catalyst

Front

substance that speeds up the rate of a chemical reaction

Back

Subscript

Front

A number in a chemical formula that tells the number of atoms in a molecule or the ratio of elements in a compound

Back

Sublimation

Front

Moving from a solid to gas and skipping becoming a liquid

Back

Coefficient

Front

A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction.

Back

Niels Bohr

Front

1913- discovered that electrons move around the nucleus in orbits called electron shells. He is also responsible for the planetary model of the atom.

Back

Mixtures

Front

A combination of two or more substances that are not chemically combined and can be separated by physical means.

Back

Electron

Front

A subatomic particle that has a negative charge

Back

Concentration

Front

A measurement of how much solute exists within a certain volume of solvent

Back

liquid

Front

A state of matter that has no definite shape but has a definite volume.

Back

Protons

Front

Positively charged particles in the nucleus. It is also equal to the atomic number.

Back

Deposition

Front

Moving from a gas to solid and skipping becoming a liquid

Back