Chemistry (Atoms and Elements) Unit 2

Question 1

Where are metals located?

Answer 1

The left side of the staircase of the periodic table.

Question 2

Where are non metals located?

Answer 2

On the right side of the staircase on periodic table.

Question 3

Where are metalliods located?

Answer 3

On the staircase on the periodic table.

Question 4

What are the 7 properties of a metal?

Answer 4

lustre
silver or gray
malleable
ductile
solid
conducts heat
conducts electricity

Question 5

What are the 4 properties of a non metal?

Answer 5

full
brittle
insulator
solid or gas

Question 6

what are metalloids?

Answer 6

metalloids demonstrate some properties of metals and some properties of non metals

Question 7

what are the three states of matter

Answer 7

solid
liquid
gas

Question 8

what determines how reactive an atom will be?

Answer 8

the number of electrons in the outer orbit

the less number of electrons needed to be gained or lost in order to have a full outer shell, the greater the reactivity

Question 9

what families are most reactive

Answer 9

the alkali metals and the halogen family

Question 10

why are the alkali metals and halogen family most reactive?

Answer 10

They’re the most reactive because they. only have one electron to gain or lose in order to have a full outer shell

Question 11

what family is least reactive?

Answer 11

noble gases

Question 12

why are the noble gases the least reactive family?

Answer 12

because the outer shell is full

Question 13

metals tend to ________ while non metals tend to ________ electrons

Answer 13

lose

gain

Question 14

distinguish between: element and compound

Answer 14

Elements: an element is made up of one type of atom.
Compounds: a compound is made up of two or more types of atoms.

Question 15

distinguish between: atom and molecule

Answer 15

Atom: an atom is the smallest particle of an element
Molecule: a molecule is the smallest particle of a compound

Question 16

what is a diatomic molecule? list the 7 diatomic molecules

Answer 16

a diatomic molecule is an element that had molecules as long as the atoms in the molecules are the same ex. O2
nitrogen
oxygen
fluorine
chlorine
bromine
iodine
hydrogen

Question 17

what are the 3 ways to obtain a full outer electron shell?

Answer 17

gain
lose
share

Question 18

What are the number of atoms for each element of this compound?
2C11H22O12

Answer 18

Carbon-22
Hydrogen-44
Oxygen- 24

Question 19

what are the 8 physical properties?

Answer 19

state
hardness
malleability
ductility
density
viscosity
solubility
melting and boiling point

Question 20

what are the 5 chemical properties?

Answer 20

combustion
oxygen
hydration
corrosion
heating

Question 21

a block of aluminum occupies a volume of 15mL and weighs 40.5g. What is it’s density?

Answer 21

M/V=40.5/15=2.7g/mL3

answer=2.7g/mL3

Question 22

define: soluable

Answer 22

able to be dissolved

Question 23

define: insoluable

Answer 23

not able to be dissolved in a liquid

Question 24

define: solvent

Answer 24

the liquid in a solution

Question 25

define: solute

Answer 25

the component dissolved into the solvent

Question 26

state the characteristics of a chemical changed

Answer 26

change in temperature
change in colour
noticeable odour
light or heat
not reversible

Question 27

state the characteristics of a physical change

Answer 27

change in state

reversible

Question 28

define:percipitate

Answer 28

a solid formed after you combine two elements

Question 29

define:hydrocarbon

Answer 29

material made from hydrogen and carbon