Unit 2 Homework

Question 1

K

Answer 1

potassium

Question 1

Na

Answer 1

sodium

Question 2

Ca

Answer 2

calcium

Question 3

P

Answer 3

phosphorus

Question 4

Cl

Answer 4

chlorine

Question 5

C

Answer 5

carbon

Question 6

Non-polar covalent bonds are formed when:

Answer 6

electrons are shared equally by the atoms in a bond

Question 7

Hydrogen bonds are formed when:

Answer 7

charged regions of molecules are attracted to oppositely-charged regions of other molecules

Question 8

Ionic bonds are formed when:

Answer 8

electrons are transferred completely from one atom to another

Question 9

Water has all of the following properties except:

Answer 9

it is a good solvent for nonpolar molecules

Question 10

What do we call chemical reactions in which the products are more complex than the reactants, such as: A + B –> AB

Answer 10

synthesis

Question 11

An atom that has more electrons than protons will have a negative charge and is known as a(n):

Answer 11

anion

Question 12

Compared with a solution with a pH of 7, a solution with a pH of 5 has a:

Answer 12

100 times higher concentration of H+