Counting Atoms Practice 2

Front

What does the arrow in a chemical equation represent?

Back

The arrow in a chemical equation reads as 'makes', indicating the transformation of reactants into products.

Front

How many Chlorine (Cl) atoms are in MgCl2?

Back

There are 2 Chlorine (Cl) atoms in MgCl2.

Front

How many Nitrogen atoms are in H3C2ON5?

Back

There are 5 Nitrogen atoms in H3C2ON5.

Front

How many elements are present in C2H8O?

Back

There are 3 elements present in C2H8O: Carbon (C), Hydrogen (H), and Oxygen (O).

Front

What does the subscript in a chemical formula indicate?

Back

The subscript in a chemical formula tells you how many atoms of an element are present in a molecule.

Front

What is a chemical formula?

Back

A chemical formula is a way of expressing the number and type of atoms in a molecule using symbols and subscripts.

Front

What are reactants in a chemical equation?

Back

Reactants are the starting substances that undergo a chemical change in a reaction.

Front

What are products in a chemical equation?

Back

Products are the substances that are formed as a result of a chemical reaction.

Front

How do you determine the number of atoms in a compound?

Back

To determine the number of atoms in a compound, add the subscripts of each element in the chemical formula.

Front

What is the significance of coefficients in a chemical equation?

Back

Coefficients indicate the number of molecules or moles of a substance involved in a chemical reaction.