Chp 16

Question 1

Chemical formula

Answer 1

symbols for bonded elements placed together.in a chemical formula,metals symbols always come first

Question 2

Alkali reactiveness

Answer 2

Very reactive

Question 3

Alkaline reactiveness

Answer 3

Reactive

Question 4

Halogens reactiveness

Answer 4

Very reactive

Question 5

Noble gases reactiveness

Answer 5

Nonreactive

Question 6

Ductile

Answer 6

Ability to be drawn into wires

Question 7

Example of ductile

Answer 7

Copper wire

Question 8

Malleable

Answer 8

Ability to be hammered into thin sheets,easily shaped.

Question 9

Example of malleable

Answer 9

Gold

Question 10

Element formula

Answer 10

The symbols for the elements.

Question 11

How many capitalized letters for one element(example Nitrogen)

Answer 11

One capitalized letter(Example N)

Question 12

If an element has one element and 2 symbols what would it look like(Calcium)

Answer 12

One capitalized letter and one lowercase letter(Ca)

Question 13

What are the two specific properties that can be used to identify metals?

Answer 13

Malleable and ductile.

Question 14

Physical property

Answer 14

Properties that describe how the object looks or feels.NOTHING NEW is being made, only altered.

Question 15

What are the physical properties that describe how an object looks or feels(there are5)

Answer 15

Color,hardness,density,texture,and phase

Question 16

Compounds

Answer 16

Different elements that are bonded together.

Question 17

Chemical reaction

Answer 17

The result of the rearrangements of the way the atoms are bonded together.

Question 18

Chemical bonds

Answer 18

The result of various forces of attraction that hold the atoms together.

Question 19

Chemical properties

Answer 19

Charecterizes the ability of a substance to react with another substance or change from one substance. A NEW material is formed in the process. The process is called a chemical change

Question 20

After a physical change are the molecules destroyed?

Answer 20

No they stay the same

Question 21

After a chemical change do the molecules stay the same?

Answer 21

No

Question 22

Condensation

Answer 22

When enough energy is removed from the gas (vapor) phase to turn the gas back to a liquid.

Question 23

Example of condensation

Answer 23

Water droplets that form on the outside of a coke can on a warm humid day.

Question 24

Boiling

Answer 24

Part of the evaporation process and occurs when enough energy is added to a liquid to same of the liquid to become gaseous.

Question 25

Boiling example

Answer 25

Boiling water

Question 26

What point does water boil at?

Answer 26

100 degrees Celsius

Question 27

Evaporation

Answer 27

Energy is added to a liquid causing the atom to become free to more about and forming a gas. Water to vapor

Question 28

Where does evaporation occur

Answer 28

Only at the surface of a liquid

Question 29

Freezing

Answer 29

The change of phase where energy is removed from a liquid to become a solid.

Question 30

What is the fresh water freezing point?

Answer 30

0 degrees Celsius

Question 31

Melting

Answer 31

The change of phase where energy is added to a solid causing the solid to melt into the liquid state.

Question 32

What are the changes in states commonly known as?

Answer 32

Changes in phase

Question 33

What are the three phases of matter

Answer 33

Solid liquid and gases

Question 34

Solids

Answer 34

Attraction between the atoms is very strong,no much movement vibration. Has a shape.

Question 35

Liquids

Answer 35

Atoms are free to move and take up the shake of the container and have ability to flow, the energy level is greater than solids.

Question 36

Gases

Answer 36

Particles of matter that are moving so fast than any attraction they have for each other cannot be maintained. Do not have a shape or flow gases will take up all available space. The energy level of gases is the highest.

Question 37

Atomic theory

Answer 37

Every time atom is more complex because because we understand it more