Chem unit test

Question 1

Ductility

Answer 1

can be stretching into a wire

Question 2

state of matter

Answer 2

liquid,solid, gas

Question 3

Physical property examples

Answer 3

Ductility
State of matter
viscosity
hardness
lustre

Question 4

Viscosity

Answer 4

resistance to flow

Question 5

hardness

Answer 5

ability to resist being scratched

Question 6

lustre

Answer 6

ability to refelect light

Question 7

Chemical property examples

Answer 7

Reaction with acids
Combustibility
Light sensitivity

Question 8

Reaction with acids

Answer 8

metals react with acids

Question 9

Combustibility

Answer 9

ability to burn

Question 10

Light sensitivity

Answer 10

reacts with light

Question 11

difference between chemical and physical properties

Answer 11

Chemical properties a new substance is made while physical has no new substance made

Question 12

Hints of a chemical change

Answer 12

change in color
irreversible
new gas produced
new solid produced(precipitate)
energy produced

Question 13

matter

Answer 13

anything that has mass and takes up space

Question 14

Difference between heterogenous and homogenous(solution)

Answer 14

Heterogenous you can see the different substances
Homogenous all looks the same

Question 15

Can an element be broken down

Answer 15

no it is already in its purest form

Question 16

can a compund be broken down

Answer 16

can be broken down into different atoms/elements

Question 17

what is a compound

Answer 17

severial different atoms that are chemically bonded

Question 18

What is a protons charge

Answer 18

+ve

Question 19

What is a protons location

Answer 19

nucleaus

Question 20

what is a protons mass

Answer 20

1 amu

Question 21

What is a neutron charge

Answer 21

neutural

Question 22

What is a neutron location

Answer 22

nucleaus

Question 23

What is a neutron mass

Answer 23

1 amu

Question 24

What is a electron charge

Answer 24

-ve

Question 25

What is a electron location

Answer 25

shells

Question 26

What is a electron mass

Answer 26

0 amu

Question 27

How do you calculate no.protons

Answer 27

= to atomic number

Question 28

How do you calculate no.electrons

Answer 28

= to atomic number

Question 29

How do you calculate no.neutrons

Answer 29

= atomic mass - atomic number

Question 30

how do you calculate atomic mass

Answer 30

= no.protons + no.neutrons

Question 31

What properties can you use to tell the difference between metals and non metals

Answer 31

Metals are mostly solid at room temp, high lustre Non-metals are mostly gas at room temp, low lustre

Question 32

Where are metals located

Answer 32

left side of the periodic table

Question 33

whaere are non-metals located

Answer 33

right side of the periodic table

Question 34

Why are metals such as alumminum and copper used for electrical wiring

Answer 34

they are great conductors and are very ductile

Question 35

What are trends

Answer 35

common proporties of atoms arranged in groups/rows/columns

Question 36

mass formula

Answer 36

M=DxV

Question 37

volume formula

Answer 37

V=M/D

Question 38

density formula

Answer 38

D=M/V

Question 39

Ionic bonds are common between

Answer 39

metals and non-metals

Question 40

covalent bonds are common between

Answer 40

non-metals and non-metals

Question 41

What is warning

Answer 41

a diamond

Question 42

What is caution

Answer 42

triangle

Question 43

What is danger

Answer 43

octogon

Question 44

What is qualatative

Answer 44

descriptive-with words-eg.color

Question 45

What is quantatative

Answer 45

measured-with numbers-eg.mass is 12kg

Question 46

What is class two of poinsouns and infectious materials called

Answer 46

toxic materials

Question 47

Dangerously reative material

Answer 47

the giant R

Question 48

oxidizing material

Answer 48

the circle on fire

Question 49

combustible material

Answer 49

the fire

Question 50

comppressed gas

Answer 50

the tube