Final

Question 1

properties of metals

Answer 1

-occupy left side of of the periodic table

-good conductors of heat/electricity

-malleable (can be pounded into flat sheets)

-ductility: they can be drawn into wires

-are often shiny

• lose electrons when they undergo chemical reactions

Question 2

Nonmetals

Answer 2

occupies upper right side of periodic table

-some are solids at room temperature
-some are gases at room temperature
-poor conductors of heat and electricity
-gains electrons when undergoing chemical reactions

Question 3

metalloids

Answer 3

elements that fall along the boundary between metals and nonmetals in the periodic table

-intermediate between metals and no metals
-semiconductors

Question 4

noble gases

Answer 4

odorless, colorless, nonflammable, and monotonic gases that have low chemical reactivity.

Group 8A

Question 5

Alkali metals

Answer 5

Group 1A

very reactive metals

Question 6

Alkaline Earth Metals Group 2A

Answer 6

fairly reactive

Question 7

Halogens Group 7A

Answer 7

very reactive nonmetals

Question 8

ions

Answer 8

atoms that gain or lose an electron

Question 9

cations

Answer 9

positively charged ions

Question 10

anions

Answer 10

negatively charged ions

Question 11

isotopes

Answer 11

atoms with same number of protons but different numbers of neutrons

Question 12

mass number

Answer 12

protons + neutrons

Question 13

percent natural abundance

Answer 13

the percentage amount of each isotope of an element in a naturally occurring sample of the element

Question 14

elements

Answer 14

cannot be broken down further

Question 15

compounds

Answer 15

a substance composed of two or more elements in a fixed/ definite proportions

Question 16

homogeneous

Answer 16

consistent composition

Question 17

heterogeneous mixture

Answer 17

not consistent throughout

Question 18

What is matter

Answer 18

anything that occupies space and has mass

Question 19

What is matter composed of?

Answer 19

Atoms
- fundamental building blocks

Question 20

What are the states of matter

Answer 20

solid liquid gas

Question 21

what are the two types of solid matter

Answer 21

crystalline- atoms and molecules arranged in geometric patterns (salt, diamond)

amorphous: atoms do not have long-range repeating pattern *rubber, glass, plastic

Question 22

What are the properties of solids

Answer 22

atoms close together, fixed volume, rigid shape, incompressible

Question 23

what are the properities of liquids

Answer 23

atoms close to each other but free to move around, fixed volume, assumes the shape of the container, incompressible

Question 24

what are the properties of gas

Answer 24

atoms are separated by large spaces, assume the volume and shape of their containers, compressible

Question 25

what is a pure substance

Answer 25

composed of one type of element or molecule may be an element or compound

Question 26

what is a mixture

Answer 26

composed of two or more different types of atoms or molecules in variable proposition, not chemically bonded

Question 27

physical property

Answer 27

a change displayed that doesn't change composition (density, odor, taste, appearance, melting point, boiling point)

Question 28

chemical property

Answer 28

a composition change (corrosiveness, flammability, acidity, toxicity P_

Question 29

Main-group elements

Answer 29

properities are predictable based on their position in the periodic table

Question 30

Transition metals

Answer 30

properties that are less easily predictable

Question 31

Dalton's Atomic Theory

Answer 31

1. Each element is composed of indestructible particles called atoms 2. All atoms of a given element have the same mass and other properties that distinguish them from the atoms of other elements 3. Atoms combine in simply, whole-number ratios to form compounds

Question 32

how to calculate ion charge

Answer 32

of protons -- # of electrons

Question 33

how to calculate atomic mass

Answer 33

number of p + # of neutrons

Question 34

If an ionic compound is soluble and added to a solvent, what will happen?

Answer 34

the ionic compound will break apart into ions solution will be able to conduct electricity solvent concentration of ions will be higher than the solution concentration that is given for the ionic compound