8th Science 8.5DE

Front

What is the coefficient in a chemical equation?

Back

The coefficient in a chemical equation is the number that appears in front of a chemical formula.

Front

What is a chemical reaction?

Back

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.

Front

What do the subscripts in a chemical formula represent? (e.g., NaNO2)

Back

The subscripts in a chemical formula represent the number of atoms of the element in front of the subscript.

Front

What is the law of conservation of mass?

Back

Mass cannot be created or destroyed in a chemical reaction.

Front

How many elements are in C6H12O6?

Back

There are 3 elements in C6H12O6.

Front

What is a reactant in a chemical reaction?

Back

A reactant is a substance that undergoes change during a chemical reaction.

Front

What is a product in a chemical reaction?

Back

A product is a substance that is formed as a result of a chemical reaction.

Front

What does a balanced chemical equation represent?

Back

A balanced chemical equation represents the conservation of mass, showing that the number of atoms of each element is the same on both sides.

Front

What is an example of a physical change?

Back

An example of a physical change is melting ice into water.

Front

What is an example of a chemical change?

Back

An example of a chemical change is rust forming on iron.