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100

The basic particle from which all elements are made

atom

100

Nickname for Group 18 elements, which DO NOT like to react or form bonds

noble gases

100

Type of chemical reaction in which energy is RELEASED (-Δ H)

exothermic reaction

100

different forms of the same element that contain the same number of protons but different number of neutrons

isotope

100

Substance that forms as a result of a chemical reaction (right side of reaction)

product

200

Positively charged subatomic particle found in the nucleus of an atom

proton

200

A mixture in which pure substances are unevenly distributed throughout the mixture

Heterogenous mixture

200

type of bond formed between nonmetals

covalent bond

200

A horizontal row of elements in the periodic table

period

200

Substance that exists before a chemical reaction begins (left side of reaction)

reactant

300

A pure substance made of two or more elements chemically combined

Compound

300

We use this word to describe when a substance is mixed with water

aqueous (aq)

300

Type of electrochemical cell that REQUIRES energy to plate objects like keys, silverware, jewelry, etc.

electrolytic cell

300

Elements in the same vertical column of the periodic table

group

300

Organic compounds that ONLY contain hydrogen and carbon atoms

hydrocarbons

400

anything that has mass and takes up space

matter

400

A change of state (phase change) from liquid to gas

vaporization

400

type of bond formed between metals and nonmetals

ionic bond

400

The number of protons in the nucleus of an atom

atomic number

400

type of intermolecular force that exists between Hydrogen and F, O, N

hydrogen bonding

500

A pure substance that cannot be broken down into other substances by chemical or physical means

element

500

A compound which dissolves in water to form a solution that will conduct electricity due to the presence of ions

electrolyte

500

The outermost shell of an atom

valence shell

500

The number of protons and neutrons in the nucleus of an atom

atomic mass number

500

the amount of energy needed for a chemical reaction to get started

activation energy