Biochemistry Vocabulary Review

The smallest unit of matter.

• atom

• ion

• element

• molecule

Substance made up of more than one element.

• atom

• element

• ion

• molecule

Substance made up of only one type of atom. ​ (a)  

• element
• ion
• molecule

Atoms that have gained or lost electrons.

• element

• ion

• molecule

• atom

Table used to organize the elements.

Matter cannot be created nor destroyed.

• chemical bond

• chemical reaction

• conservation of matter

• conservation of elements

Holds elements together to form a molecule. ​ (a)  

• chemical bond
• chemical reaction
• chemical glue

Bonds are broken and reformed to create new substances.

• chemical scissors

• chemical enzymes

• chemical bonds

• chemical reaction

Reorder the following from smallest to largest.

• element

• chemical reaction

• atom

• molecule

Which of the following is an element? ​ (a)  

• carbon
• water
• carbon dioxide
• sugar