Question | Answer |
Chemical [...] are used to describe chemical reactions. | Chemical equations are used to describe chemical reactions. |
In a chemical reaction, the substances you begin with are the [...]. | In a chemical reaction, the substances you begin with are the reactants. |
In a chemical reaction, the substances you end up with are the [...]. | In a chemical reaction, the substances you end up with are the products. |
In a chemical equation, the arrow always points to the [...]. | In a chemical equation, the arrow always points to the products. |
[...] react with each other to produce products. | Reactants react with each other to produce products. |
Reactants react; [...] are produced.. | Reactants react; Products are produced.. |
Chemical equations are typically written using chemical [...]. | Chemical equations are typically written using chemical symbols. |
Chemical equations: Reactants are separated from each other with a [...] sign. | Chemical equations: Reactants are separated from each other with a + sign. |
Chemical equations: Products are separated from each other with a [...] sign. | Chemical equations: Products are separated from each other with a + sign. |
Chemical equations: Reactants and Products are separated from each other with an [...]. | Chemical equations: Reactants and Products are separated from each other with an arrow. |
Chemical equations: The arrow always points to the [...]. | Chemical equations: The arrow always points to the products. |
Chemical equations: If the arrow is pointing away from it, it's a [...]. | Chemical equations: If the arrow is pointing away from it, it's a reactant. |
Chemical equations: if the arrow is pointing toward it, it's a [...]. | Chemical equations: if the arrow is pointing toward it, it's a product. |
The law of conservation of mass states that the mass of the reactants in a chemical reaction is always [...] the mass of the products. | The law of conservation of mass states that the mass of the reactants in a chemical reaction is always equal to the mass of the products. |
Conserved' means 'protected' or '[...]' | Conserved' means 'protected' or 'retained' |
The law of [...] of mass says that mass is protected or retained in a chemical reaction; it doesn't change as reactants turn into products. | The law of conservation of mass says that mass is protected or retained in a chemical reaction; it doesn't change as reactants turn into products. |
[...] of Mass was discovered by Antoine Lavoisier in the mid-1700s. | Conservation of Mass was discovered by Antoine Lavoisier in the mid-1700s. |