6.5 Atoms Test Review

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

• reactant

• coefficient

• atom

• subscript

Two or more atoms that are bonded together-

• atom

• molecule

• subscript

• neutron

Tags

NGSS.MS-PS1-1

The force that holds two atoms together-

• chemical bond

• chemical reaction

• chemical change

A substance present at the start of a chemical reaction-

• reactant

• product

• subscript

• yields

Tags

NGSS.MS-PS1-5

Numbers in a formula that are written smaller and lower than the letter symbols that show the number of atoms of an element in a molecule, or the ratio of elements in a compound-

• reactants

• products

• coefficients

• subscripts

A short, easy way to show a chemical reaction, using symbols instead of words-

• chemical equation

• chemical bond

• compounds

• elements

A substance that is formed as the result of a chemical reaction-

• protons

• neutrons

• product

• electrons

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Subatomic particle with a negative charge; orbits the atom

• proton

• neutron

• electron

Subatomic particle with a positive charge.

• proton

• neutron

• electron

Subatomic particle that is neutral.

• proton

• neutron

• electron