Chemistry of Life

These make up all matter.

• Elements
• Atoms
• Molecules
• Cells

When elements are held together by covalent bonds they from a 

• Molecule
• Compound
• Atoms
• Isotopes

When atoms gain or lose electrons they become

• Isotopes
• Ions
• Molecules
• Compounds

What effect does adding an acid to a solution have?

• raises the pH
• lowers the pH
• no effect
• neutralizes the solution

In salt water, salt is the......

• Solution
• Solvent
• Solute
• None of these

Why does carbon work so well as the "element of life"?

• Small atom
• Has only 2 electron shells
• Its not acidic
• It is able to form 4 covalent bonds

When molecules are attracted to each other (themselves) it is called.....

• cohesion
• adhesion
• self liking
• ionic bonds

When molecules are attracted to molecules of another substance it is called....

• cohesion
• adhesion
• surface tension
• ionic bonding

Hydrogen bonds are a result of what kind of molecule?

• carbon
• polar
• nonpolar
• liquids

Which of these are examples of carbon based molecules?

• Lipids and Nucleic Acids
• Carbohydrates
• Proteins
• All 4 of these