Ch 6 Biology Test Review

The three particles that make up atoms are

• protons, neutrons, and isotopes.
• neutrons, isotopes, and electrons
• positives, negatives, and neutrals
• protons, neutrons, and electrons

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

• protons
• electrons
• 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
• enyme

Which of the following makes up a molecule of water?

• one atom of hydrogen one atom of oxygen
• one atom of sodium and one atom of chlorine
• one atom of hydrogen and two atoms of oxygen
• two atoms of hydrogen and one atom of oxygen

A covalent bond is formed as the result of

• transferring electrons
• sharing electrons
• transferring protons
• sharing protons

Which property of water causes the curved surface shown in the figure with the graduated cylinder with curved water at the top?

• pH
• cohesion
• adhesion
• heat capacity

Water molecules are polar, with the

• oxygen side being slightly positive and the hydrogen side being slightly negative
• oxygen and hydrogen sides being slightly positive
• oxygen and hydrogen sides being slightly negative.
• oxygen side being slightly negative and the hydrogen side being slightly positive

If you stir salt into boiling water, you produce a

• mixture called a suspension
• mixture called a solution
• solution and suspension
• mixture only

When salt is dissolved in water, water is the

• reactant
• solution
• solute
• solvent

A substance with a pH of 6 is called

• acid
• base
• water
• suspension