Matter Matters
Atomic History
Periodic Table
Building Atoms
Charged Up!
Molucules
Bonding Tight
100
What causes atoms to dance faster?
increased heat/energy
100
What is the name of the model we currently use for atomic structure?
quantum/electron cloud
100
What is the name for the rows and columns in the periodic table?
Rows = periods
columns = groups or families
100
What sub-atomic particles live in the nucleus and what is their charge?
Proton (+)
Neutron(0)
100
If an atom gains an electron what charge will the ion be?
negative (more - charges than +)
100
If an atom is a letter, what is a molecule?
word
100
What bond transfers electrons and what bond shares electrons?
Transfer = ionic
Sharing = Covalent
200
Give three physical properties of maple syrup
- high viscosity
- brown colour
- sweet smell
- translucent
200
What are 2 errors in Thompson's cookie model?
- no nucleus, stationary electrons,
200
The metaloids divide what two classes of element on the periodic table
metal, non-metal
200
What subatomic particles are not located in the nucleus and what is their charge?
Electrons (-)
200
If an atom loses an electron what charge will the ion be?
Positive (more + charges than -)
200
How many atoms:
H2O
3
200
How many shared bonds can carbon create?
4
300
If a substance can be compressed, what state MUST it be in?
gas
300
Why is Heisenberg's model known as a probability cloud?
shows where electrons are most likely to be rather than drawing them in definitive locations
300
What are two things that atomic families tend to have in common
# of outer electrons, chemical properties etc
300
What element?
Carbon
300
Why do ions form?
Atoms want to have a full outer shell of electrons
300
How many atoms:
3C2H5OH
27
300
What classes of elements are involved in an ionic bond?
Metal + non-metal?
400
What is the main difference between a physical and chemical change
chemical change results in new particles
400
Which of Dalton's following observations do we now know are incorrect?
a) all matter is made up of tiny, indivisible particles called atoms
b) all atoms of an element are identical
c) atoms of different elements are unique
none, maybe (a) if they can justify
400
What pattern determines the length of the first three periods?
# of valence (outer shell) electrons
400
What element am I?
Protons = 16
Neutrons = 16
Sulfur
400
Are non-metals more likely to gain or lose electrons? Why?
Gain, it's easier to fill a few empty spots than lose more electrons
400
What determines where the atoms in a molecule go (aka the structure of a molecule)
The number of bonds each atom can create.
400
What determines how many bonds an atom can make?
number of electrons in the outer shell
500
Name the type of matter for each:
1) coca-cola
2) beach sand
3) table salt
1) solution
2) mechanical mixture
3) compound
500
Explain how Rutherford's foil experiment gave proof of the nucleus
most +'ve particles passed through but some deflected. Showed small, + charged core of atom surrounded by empty space
500
Give the family name, an example and 2 notable characteristics of family 18
non-reactive, odourless, colourless gasses
500
Give me the Protons, electrons and neutrons of element He
2, 2, 2
500
If an alkali metal forms an ion, what will the charge be and why?
Positive, they are more likely to lose their outer electron
500
Why do some atoms have 1 line and some atoms have 2? What do the lines represent?
Lines = shared electron pairs
double line = 2 pairs
500
Why does a metal + non-metal create ionic bonds while two non-metals create a covalent bond?
metals want to lose ions and non-metals want to gain which makes the transfer of electrons easy. 2 non-metals both want to gain so which results in shared electron pairs