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0

The weakest type of bond is called a(an) __________ bond.

Ionic

1

A gain or loss of electrons forms a(an) __________.

Ion

2

__________ dissolve in water.

Salts

3

Bonds that share two or more electrons and have no charge are __________ bonds.

Covalent

4

What are covalent bonds?

Bonds that share two or more electrons and have no charge.

5

__________ make or break chemical bonds.

Chemical Reactions

6

What is Electronegativity?

An atoms affinity for electrons.

7

(Polar/Nonpolar) covalent bonds have unequal sharing of electrons.

Polar

8

_____ is essential for life and has the ability to form hydrogen bonds.

Water

9

In water, O to H bonds are highly (polar/nonpolar).

Polar

10

True or False? Hydrogen Bonds are weak.

True

11

__________ is water to water.

Cohesion

12

_________ is water to other polar molecules.

Adhesion

13

Matter has __________ and occupies space.

Mass

14

All matter is composed of __________.

Atoms

15

Atoms are composed of __________, __________ and __________.

Protons, Neutrons and Electrons

16

What are the four elements that make up 96.3% of the human body?

CHON (carbon, hydrogen, oxygen, and nitrogen)

17

There are 8 elements found in biological organisms in small concentrations, but are still very important. What is the name given to these elements?

Trace elements

18

Name the 8 trace elements.

Sodium, chlorine, calcium, phosphorus, potassium, sulfur, iron and magnesium