Water! (and review)

molecules of a particular substance sticking together

• cohesion
• adhesion

molecules sticking to a surface of another substance

• cohesion
• adhesion

A molecule that has a positive end and a negative end

• polar molecule
• pH
• universal solvent
• surface tension

Capillary action is the process of water molecules moving upwards through a narrow tube, such as a plant stem. What characteristic of water causes this process?

• Hydrogen bonds

• Solubility

• Adhesion

• Surface tension

Water is made up of what two elements?

• Hydrogen and Oxygen

• Carbon dioxide and Hydrogen

• Oxygen and Carbon dioxide

How do covalent bonds form?

• Donating & receiving valence e- between atoms.
• Opposite slight charges attract each other between compounds.
• Scientists are still not sure how they form.
• Sharing valence e- between atoms.

What two types of atoms make a covalent bond?

• 2 Nonmetals
• 1 Nonmetal and 1 Metal
• 2 Metals
• 2 Noble Gases

Which of the following is NOT formed by a covalent bond?

• K₂S
• H₂O
• I₂
• CO₂

Is hydrogen considered a metal or a non-metal?

• A metal
• Nonmetal
• Metalloid

What is a valence electron?

• The sum of neutrons and protons.
• The # of electrons in the last shell.
• A type of bond.
• A popular compound.