Chapter 2 biology

5 Written Questions

1. anything that has a mass and takes up space
2. the amount of energy needed to get a reaction going
3. the part on the periodic table that shows how many protons are in an element
4. if you change this part of the nucleus, then you will form a different isotope
5. are the smallest type of matter and have orbital (neutrons, electrons, protons)

5 Matching Questions

1. compound
2. catalyst
3. H+
4. polar
5. oxidation

1. a loses an electron (becomes more positive)
2. b difference in charge
3. c something to make a reaction go fast and lowers the activation energy in a reaction
4. d hydronium ion
5. e 2 or more elements that are bond to one another

5 Multiple Choice Questions

1. present in smaller amounts
   1. solvent
   2. -OH
   3. solute
   4. polar
2. gains an electron (becomes more negative)
   1. oxidation
   2. cation
   3. reduction
   4. neutrons
3. the attraction of positive and negative to one another
   1. electrons
   2. endothermic reactions
   3. electrostatic attraction
   4. exothermic reactions
4. the ability to do work
   1. element
   2. anion
   3. energy
   4. enzymes
5. release energy
   1. atomic mass
   2. exothermic reactions
   3. endothermic reactions
   4. electrons

5 True/False Questions

1. anion → positive ion

   True        False

2. solvent → something on the periodic table that cannot be broken down any further

   True        False

3. enzymes → the ability to do work

   True        False

4. kinetic energy → energy of motion

   True        False

5. endothermic reactions → absorb energy

   True        False