A substance that enters into a chemical reaction is called a

A substance that appears at the end of a chemical reaction is a

In a reaction where hydrogen peroxide breaks down into water and oxygen gas, which substance(s) are the reactants?

How many atoms of copper (Cu) are represented in 2 Cu2O

In chemical reactions, what is the relationship between the total mass of reactants and the total mass of products?

H2O + CO2 → H2CO3 is an example of a _______________ reaction

Zn + 2HCl → H2 + Zn + 2Cl is an example of ____________ equation

In a double replacement reaction hydrogen chloride and sodium hydroxide react to produce sodium chloride. Another product is

To balance chemical equations _________________ are used

Which chemical equation is balanced

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