Ch.2 Chemistry Comes Alive

Which subatomic particles, when summed, equal the Atomic mass of an element

• Protons + Electrons

• Protons + Neutrons

• Electrons + Neutrons

What is the difference between isotopes?

• The atomic number

• The atomic weight/mass

• The number of Protons

• The number of electrons

A cation is a _______ charged ion.

• Anion

• Negative

• Neutral

• Positive

T/F: Covalent bonds are weak

• True

• False

Ionic Bonds ______ electrons

• Share

• Transfer

Which type of transfer is characterized by the unequal share of electrons?

• Nonpolar Covalent

• Polar Covalent

• Ionic

Which of the following are Alkaline?

• Blood

• Saliva

• Water

• Eggs

Which one is more acidic, 5 or 6? How much more acidic?

• 6; 100x more

• 5; 1x more

• 6; 10x more

• 5; 10x more

As Hydrogen ions (H) go up, pH _____

• Remains the same

• Increases

• Decreases

______ are the major source of energy in the body.

• Carbohydrates

• Lipids

• ATP

• Proteins