We Didn't Learn This
The temperature at which water becomes water vapour.
100oC or 212oF
What are the 4 states of matter?
Solid, liquid, gas, plasma
What is the name for BaBr2
Barium bromide
What is the atomic number of neon (Ne)?
10
DOUBLE POINTS
How many energy levels does calcium have?
Which area of study in chemistry deals with compounds made of carbon (living things)?
Organic chemistry
What is the difference between elements and compounds?
2 or more elements make up a compound.
Name N2Cl5
Dinitrogen pentachloride
Name all 3 subatomic particles AND their charges.
Protons +
Neutrons 0
Electrons -
How many electrons does the first shell hold?
2
Name 2 of the steps in the scientific method
1) Making observations 2) Proposing a hypothesis 3) Analyzing data 4) Drawing a conclusion 5) Sharing the results
Is the atomic number located above or below the element's symbol on the periodic table?
Above the symbol.
DOUBLE POINTS
What is the chemical formula for: ammonium phosphate
(NH4)3PO4
How many neutrons does fluorine contain? (Mass # = 19)
Why are alkali metals so reactive?
They only have one valence electron which makes them unstable!
Name 4 ways to identify a chemical reaction
Change in color/odor/texture/taste, etc.
Give off heat or light
Produce a gas (bubbles)
Form a precipitate (solid)
Dalton thought that what were the smallest units of matter?
Atoms
What is the chemical formula of iodine gas?
I2
What is an isotope?
Same element, different mass # (different # neutrons)
How many valence electrons are found in Halogens?
7
What was Ms. Haugan's least favourite subject during her first undergrad? (Hint: it was in Earth and Planetary Sciences)
Geochemistry
What is the atomic number of Uranium-226?
92
What is the chemical formula of calcium nitrate?
Ca(NO3)2
What is the charge on Oxygen when it ionizes?
-2
What is the current model of the atom called?
Quantum Mechanical Model or Electron Cloud Model