Properties
Is melting point a qualitative or a quantitative physical property?
Is a change of state a physical or chemical change?
Physical
What are the three main states of matter?
Solid, liquid, and gas
What do we call the smallest particles of a substance that still have the properties of that substance?
Atoms!
What is the electric charge of
a) a proton
b) a neutron
c) an electron
a) +
b) -
c) neutral
What is the formula for density?
density=mass/volume
If a new substance is formed, has a physical or a chemical change taken place?
Chemical
List the states of matter in order from weakest attractive forces between particles to strongest
gas, liquid, solid
Who discovered the electron?
a) Dalton
b) Thomson
c) Rutherford
d) Bohr
Thomson
Where do each of the following subatomic particles live?
a) protons
b) neutrons
c) electrons
a) nucleus
b) nucleus
c) energy levels (orbitals)
What is the density of mercury if 5 mL of mercury weighs 67.5g?
13.5 g/mL
Classify the following changes as physical or chemical
a) Ice melting in your drink
b) Toast going brown in the toaster
c) Crumpling a piece of paper
a) physical
b) chemical
c) physicalMatching
1. solids a) particles slip and slide past each other
2. liquids b) particles vibrate
3. gases c) particles move quickly in straight lines
1. b
2. a
3. c
Who discovered the nucleus?
a) Dalton
b) Thomson
c) Rutherford
d) Bohr
Rutherford
Classify the following properties as qualitative or quantitative:
a) boiling point
b) malleability
c) texture
a) quantitative
a) qualitative
a) qualitative
Define the following state changes
a) vaporization
b) freezing
c) melting
a) liquid to gas
b) liquid to solid
c) solid to liquid
What was the name of Thomson's model of the atom?
The plum pudding model, or the blueberry muffin model
Classify the following properties as physical or chemical
a) combustibility
b) reactivity with acids
c) density
a) chemical
b) chemical
c) physical (quantitative)
a) solid to gas
b) gas to solid
c) gas to liquid
a) sublimation
b) deposition
c) condensation
What was Bohr's contribution to atomic theory?
He discovered that electrons live in discrete energy levels