Chem with E & M

Is H₂O₂ an element or a compound?

• element

• compound

An atom that gains or loses an electron becomes

• an isotope

• a new element

• an ion

• a molecule

How many different elements are in the C₆H₁₂O₆

• 3

• 6

• 12

• 24

What is the charge of an aluminum ion that has 13 protons and 10 electrons?

• 3+

• 3 -

• no charge

When a chemical reaction occurs...

• New molecules and atoms are formed

• Molecules and atoms are rearranged

• Molecules and atoms disappear

• Molecules and atoms are destroyed

The law of Conservation of Mass states

• matter can be created and destroyed

• matter takes up space

• matter cannot be created or destroyed

• matter has a new mass after a chemical reaction

What are the starting materials in a reaction?

• product

• subscript

• coefficient

• reactants

What is the substance that is formed after a chemical reaction called?

• product

• subscript

• coefficient

• reactants

where are the reactants in an equation?

• The reactants are on the left side of an equation

• the reactants are on the right side of an equation

where are the products in an equation?

• The products are on the right side of the equation

• The products are on the left side of the equation