Chemistry of Life

What are found in the space surrounding the nucleus of an atom?

• protons

• electrons

• neutrons

• ions

Isotopes are atoms of the same element with the same number of protons and a different number of

• electrons

• molecules

• neutrons

• ions

Which of the following is a substance formed by the chemical joining of two or more elements in definite amounts?

• compound

• isotope

• nucleus

• enzyme

The physical and chemical properties of a compound are usually very different from those of the elements from which it is formed.

• True

• False

A covalent bond is formed as a result of transferring electrons

• True

• False

What type of ion forms when an atom loses electrons?

• neutral

• positive

• negative

• radioactive

When salt is dissolved in water, water is the

• reactant

• solution

• solute

• solvent

Solutions that have more OH- than H+ ions are

• reactants

• acids

• bases

• enzymes

Which of the following is NOT a monomer?

• a glucose molecule

• an amino acid

• a nucleotide

• a protein

In chemical reactions, atoms are

• created

• destroyed

• rearranged

• neutralized