Chemical Reactions: 7-MS-PS1-2 and 7-MS-PS1-5

What is the basic unit of matter that makes up all substances?

• Element

• Molecule

• Atom

• Compound

What is a pure substance made of only one type of atom?

• Molecule

• Element

• Compound

• Mixture

What is a substance made of two or more atoms chemically bonded together?

• Element

• Mixture

• Molecule

• Atom

What is a substance made of two or more different elements chemically bonded in a fixed ratio?

• Mixture

• Element

• Compound

• Atom

What is a process in which substances interact and form new substances with different properties?

• Physical Change

• Chemical Reaction

• Mixture

• Conservation of Mass

What are the starting substances in a chemical reaction called?

• Products

• Reactants

• Compounds

• Elements

What are the new substances formed as a result of a chemical reaction called?

• Reactants

• Elements

• Products

• Mixtures

What principle states that mass is neither created nor destroyed in a chemical reaction?

• Law of Conservation of Mass

• Chemical Change

• Physical Change

• Endothermic Reaction

What is a chemical equation in which the number of atoms of each element is the same on both sides?

• Unbalanced Equation

• Balanced Equation

• Chemical Formula

• Subscript

What is a small number written below and to the right of a chemical symbol in a formula?

• Coefficient

• Subscript

• Molecule

• Element