Test Biology 1
What do atoms for when they share electron pairs?
1. Molecules
2. Elements
3. Ions
4. Aggregates
5. Isotopes
The formation of ice on a pond during colder weather helps to temper the seasonal transition to
winter. This is mainly because :
1. The ice insulates the water from the winter air
2. Formation of hydrogen bonds releases heat
3. Formation of hydrogen bonds absorbs heat
4. There is less evaporative cooling of lakes
5. The ice melts each afternoon
What is the maximum number of covalent bonds an element with an atomic number 16 can make
with a single hydrogen atom?
1. 1
2. 2
3. 3
4. 4
5. 5
Which of the ionizes following partially in solution and is a weak base?
1. HCl
2. NaOH
3. H2CO3
4. CH3COOH
5. NH3
Which of the following liquids does not have a measurable pH?
1. Gasoline
2. Milk
3. Seawater
4. Orange Juice
5. Distilled Water
The nutritional info on a cereal box shows that 1 serving of dry cereal has 90 Calories (1Calorie=
1kilocalorie) If one were to burn a serving of cereal, the amount of heat given off would be
sufficient to raise the temp of 1kilogram of water how many degrees Celsius?
1. 90.0 degrees Celsius
2. .9 degrees Celsius
3. 9.0 degrees Celsius
4. 900.0 degrees Celsius
5. 9000.0 degrees Celsius