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Section 1

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family on periodic table

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Chemistry Science

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6 years ago

Date created

Mar 14, 2020

Cards (30)

Section 1

(30 cards)

family on periodic table

Front

vertical columns with similar properties

Back

Balanced equation

Front

an equation in which each side has the same number of atoms of each element

Back

Reactant

Front

A chemical substance that is present at the start of a chemical reaction

Back

atomic number

Front

the number of protons in the nucleus of an atom

Back

Periodic table

Front

A table that shows the elements, their atomic number, symbol, and average atomic mass; elements with similar chemical properties are grouped together.

Back

Proton

Front

A subatomic particle that has a positive charge and that is found in the nucleus of an atom

Back

Neutron

Front

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

Back

noble gases

Front

the elements in Group 8A of the periodic table

Back

atomic mass

Front

Number of protons and neutrons

Back

transition metals

Front

elements that form a bridge between elements on the left and right sides of the periodic table

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

valence electrons

Front

Electrons on the outermost energy level of an atom

Back

chemical formula

Front

Symbols that show the elements in a compound and the ratio of atoms

Back

electron cloud

Front

a region around the nucleus of an atom where electrons are likely to be found

Back

Atom

Front

Smallest particle of an element

Back

chemical reaction

Front

process that changes one set of chemicals into another set of chemicals

Back

Nucleus

Front

Center of an atom

Back

yields

Front

arrow in a reaction which means produces

Back

yeast

Front

a type of fungus

Back

Alkali Earth Metals (Group 2)

Front

have two valence electrons

Back

Electron

Front

A subatomic particle that has a negative charge

Back

product

Front

A substance produced in a chemical reaction

Back

alkali metals

Front

Group 1, 1 electron in outer level, very reactive, soft, silver, shiny, low density; Lithium, Sodium, Potassium, Rubidium, Cesium, Francium

Back

Compound

Front

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

Back

Element

Front

A pure substance made of only one kind of atom

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

electron shell

Front

An energy level representing the distance of an electron from the nucleus of an atom.

Back

Ion

Front

A charged atom

Back

flour

Front

a powder obtained by grinding grain, typically wheat, and used to make bread, cakes, and pastry.

Back

Period ( on Periodic table)

Front

A horizontal row of elements in the periodic table

Back