Unit 3A - Summative Exam #3A

Front

What is the name of the covalent compound CO?

Back

Carbon monoxide

Front

How many nitrogen atoms are in 20?

Back

20 nitrogen atoms

Front

In an endothermic reaction, the reactants have ____________ chemical energy than the products.

Back

less

Front

How many hydrogen atoms are in 5?

Back

5 hydrogen atoms

Front

What is the name of the covalent compound N2O5?

Back

Dinitrogen pentaoxide

Front

Define a covalent compound.

Back

A chemical compound formed by the sharing of electrons between atoms.

Front

What is an endothermic reaction?

Back

A reaction that absorbs energy from its surroundings.

Front

What is the difference between covalent and ionic compounds?

Back

Covalent compounds are formed by sharing electrons, while ionic compounds are formed by the transfer of electrons.

Front

What is the chemical formula for water?

Back

H2O

Front

What is the significance of subscripts in a chemical formula?

Back

Subscripts indicate the number of atoms of each element in a compound.