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Section 1

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exothermic reaction

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1 / 34

Chemistry Science

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7 years ago

Date created

Mar 1, 2020

Cards (34)

Section 1

(34 cards)

exothermic reaction

Front

chemical reaction accompanied by the release of heat

Back

electrical charge

Front

a property of matter that tells whether something has a positive or negative charge

Back

atom

Front

the basic unit of a chemical element.

Back

molecules

Front

Groups of two or more atoms held together by chemical bonds

Back

examples of chemical change

Front

unexpected color change, unexpected temperature change, combustion, bubbles

Back

precipitates

Front

Solid or liquid that form out of solution due to a chemical reaction

Back

atomic number

Front

The number of protons in the nucleus of an atom. Identifies an element on the periodic table.

Back

matter

Front

Anything that has mass and takes up space

Back

examples of physical change

Front

melting, cutting, folding, tearing, chopping, breaking, freezing

Back

electron

Front

A subatomic particle that has a negative charge. located outside of the nucleus.

Back

chemical reaction

Front

Process that changes, or transforms, one set of chemicals into another set of chemicals

Back

Location

Front

refers to whether or not a subatomic particle is located inside or outside of the nucleus of an atom

Back

solid

Front

A state of matter that has a definite shape and a definite volume. Particles vibrate but are in a rigid shape and structure.

Back

nucleus

Front

Center of an atom. Contains protons and neutrons.

Back

subscript

Front

a number that tells how many atoms of each element are in a molecule

Back

physical properties

Front

characteristics that can be observed or measured without the change of the composition of a substance- ductility, color, odor, luster, density

Back

neutron

Front

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

Back

gas

Front

A state of matter with no definite shape or volume, particles are moving very fast

Back

Mixture

Front

A combination of two or more substances that are not chemically combined

Back

endothermic reaction

Front

a chemical reaction accompanied by the absorption of heat

Back

Coefficient

Front

A number placed in front of a chemical formula in an equation that tells you how many of a certain molecule there are

Back

Pure Substance

Front

A substance made of only one kind of matter and having definite properties.

Back

chemical equation

Front

a way to describe a chemical reaction using chemical formulas and other symbols

Back

D'metri Mendeleev

Front

Russian chemist and physicist who formulated the Periodic law and put together the Periodic Table

Back

proton

Front

positively charged subatomic particle, located inside of the nucleus

Back

element

Front

A substance that cannot be broken down into simpler substances

Back

liquid

Front

A state of matter that has no definite shape but has a definite volume. Particles can slide past one another and are moving moderately.

Back

atomic mass

Front

Number of protons and neutrons of an atom

Back

physical change

Front

a change of matter from one form to another without a change in chemical properties

Back

atomic structure

Front

the arrangement and number of smaller particles of an atom

Back

periodic table

Front

A chart of all chemical elements currently known, organized by their properties.

Back

compound

Front

A substance made up of atoms of two or more different elements joined by chemical bonds

Back

chemical change

Front

A change in matter in which the matter becomes a new kind of matter with new properties

Back

chemical properties

Front

characteristic that is only determined by changing the identity of a substance- flammability, ability to rust, ability to tarnish

Back