Question: Answer the following question given this paragraph: The difference in electric potential energy is measured with a voltmeter in units called volts. Q: Difference in electric potential energy are measured in what basic unit? A:
OPTIONS:
- moles
- watts
- knots
- volts
Answer: volts

Question: Answer the following question given this paragraph: The largest, most complex covalent molecules have thousands of atoms. Examples include proteins and carbohydrates, which are compounds in living things. The smallest, simplest covalent compounds have molecules with just two atoms. An example is hydrogen chloride (HCl). It consists of one hydrogen atom and one chlorine atom, as you can see in the Figure below . You can watch an animation of hydrogen chloride forming at the following URL. Q: What type of compound is hydrogen chloride? A:
OPTIONS:
- polar
- metal
- ionic
- covalent
Answer: covalent

Question: Answer the following question given this paragraph: Q: Temperature and what other environmental factor are important in the activity of an enzyme? A:
OPTIONS:
- size
- shape
- color
- ph level
Answer:
ph level