Leason 2

Question 1

Name the three chemical bonds
(Chi chi)

Answer 1

Covalent bonds
Hydrogen bonds
Ionic bonds

Question 2

Atomic structure is the basic unit of what?

Answer 2

Atoms basic unit of chemical elements

Question 3

_____ are formed by covalent bonds and are the strongest of the bonds

Answer 3

Molecules

Question 4

What happens in an Ionic bond?

Answer 4

One loses an electron and the other gains

Question 5

CHON

Answer 5

Carbon, hydrogen, oxygen, nitrogen

Question 6

Protons have a positive charge. And ____ have a negative charge

Answer 6

Electrons

Question 7

What makes the Atomic Number?

Answer 7

Number of protons

Question 8

Define Isotope

Answer 8

Each of two or more forms of the same element that contain equal protons but different number of neutrons. Thus they differ in atomic mass.

Question 9

Carbon is the

Answer 9

Building block of all living matter

Question 10

Radioisotopes are less stable isotopes? True or false?

Answer 10

True

Question 11

Molecular formula tells you the atoms that make up the molecule and also ____

Answer 11

How many

Question 12

Electronegativity

Answer 12

When a molecule attracts electrons towards itself

Question 13

Nonpolar covalent bond

Answer 13

Electrons shared equally

Question 14

Covalent bonds share ions? True or false?

Answer 14

True

Question 15

Are ionic bonds charged?

Answer 15

Yes, because the protons and electrons are not equal

Question 16

Give an example of a solvent

Answer 16

Water

Question 17

What are solutes?

Answer 17

The things that dissolve in a solvent. Such as salt dissolves into water.

Question 18

Ions and molecules with what kind of bonds will dissolve in water.

Answer 18

Polar covalent bonds

Question 19

Anything dissolvable in water is called hydro____

Answer 19

Hydrophilic. It loves water.

Question 20

_______ (like oil) will NOT dissolve in water and is considered hydrophobic

Answer 20

Nonpolar

Question 21

Cohesion means -( ________) water has a high cohesion.

Answer 21

It likes to stick together

Question 22

Water exists in four states? True or false?

Answer 22

False. Only 3

Question 23

Ammonia PH

Answer 23

Between 11-12 which is a strong base

Question 24

PH can….
1.Change shapes of molecules
2.Affect chemical reaction
3.And…
(Hint: saliva)

Answer 24

Affect Salvants

Question 25

Adhesion is an attraction of _____
(Like when water sticks to dishes)

Answer 25

Unlike for unlike