Human Biology Midterm

What is the basic unit of matter?

• compound 
• atom
• molecule
• macromolecule 

The three particles that make up atoms are

• batman, robin and wonderwoman

• protons, electrons, solutions

• protons, neutrons, soltuions

• protons, neutrons, and electrons

What subatomic particle is negatively charged?

• electrons
• protons
• neutrons
• solution

The positively charged particle in an atom is called the

• neutron
• ion
• proton
• electron

Where are the electrons found in an atom?

• inside the nucleus
• outside the nucleus
• next to the  protons
• there are no electrons in an atom

Water is known as the universal __________

• solute

• solution

• solvent

• bonder

Water is known as a _______ molecule

• non-polar

• cold

• polar

• warm

Large bodies of water, such as lakes and oceans, do not quickly change in temperature. Why?

• Water acts as a buffer.

• Water is a great solvent.

• Water is an acid.

• Water has a high heat capacity.

Water is a universal solvent because it...

• It can be found anywhere

• It freezes when it gets cold

• Floats when frozen

• Dissolves more substances than anything else

The pH scale ranges from

• 0-14
• 0-7
• 7-14
• 1, 2, or 3