Grade 9
Define an Atom
What is "the basic building block of all matter in the universe"
Bonus if you draw ANY atom diagram on whiteboard
Name 4 states of matter
Classic 3 + Plasma
(Accept any others if they can describe it)
Don't accept non-newtonian fluids
How much does 2 moles of NaCl weigh? (In grams)
116.88g
(NaCl Mr = 58.44)
Describe the water cycle (generally)
Ocean Evaporates to Clouds -> Precipitation as rain (Main part but use discretion for answers)
Distinguish between mass number and relative atomic mass.
Mass #: Sum of protons and neutrons in a specific atom
RAM: "The weighted average mass of all the naturally occurring isotopes of an element.
Relative to 1/12 of Carbon-12
Define Boyle's Law
(Define any chemistry law if yall haven't learned this yet)
P₁V₁ = P₂V₂ or P ∝ 1/V
Constant Temp, Ideal Gas, Pressure and Volume are inversely proportional.
What is the total number of electrons present in a 59Ni2+ Ion?
(Write properly on board so people can see)
26
The name of the change in state from a Solid --> Gas
Draw a Bohr Rutherford model of an Sulfur Atom
Verify 2, 8, 6 Electron shells
Bonus if you draw a Sulfur Ion
How would you separate a mixture of Water and Alcohol?
Distillation (Difference in boiling points)
Bonus if you can name 5 types of separation techniques
An isotope of a particular neutral element has a mass number of 80. The number of neutrons in this isotope exceeds the number of protons by 16. What is the identity of this element?
Germanium (Atomic Number 32)
Why must chemists use the mole ratio from a balanced chemical equation rather than the mass ratio when identifying a limiting reactant?
(Bonus if you write the molecular formulas for all of them)
Carbon Dioxide (CO2)
Methane (CH4)
Nitrous Oxide (N2O)
Accept any other greenhouse gases Ms.Woo accepts
Write the balanced equation for the combustion of propane (C3H8).
C3H8 +5O2 -> 3CO2 + 4H2O
How many sig figs in the following?
3.2 * 10^8, 45890, 1.0092, 6.74 * 10^-2
2, 4, 5, 3
What is the only letter that doesn't show up on the Periodic Table?
J
John Chemistry is a farmer. His crops are right next to a lake. Why should John avoid using fertilizer right before/during heavy rain?
Nitrogen Runoff (I)
Causes Algae Blooms (II)
Effects of Algae Blooms (III)
Answers like bad financial are too obv
Correctly Identify 5 Sections of the Periodic Table (Identify group specifically not just the name)
Alkali Metals (Group 1)
Alkali Earth Metals (Group 2)
Halogens (Group 17)
Noble Gases (Group 18)
Transition Metals (meh)
What physical law requires us to balance chemical equations?
Balance this too: H3(PO4) + Ca(OH)2 --> ?
The Law of Conservation of Mass.
3Ca(OH)2 + 2H3(PO4) --> Ca3(PO4)2 + 6H2O
2Al(s) + 3Cl2(g) --> 2AlCl3 (s)
If 5.40g of Al(s), reacted with 21.3g of Cl2(g), what mass of AlCl3 is produced?
26.7g
Your group has 1 minute to teach a grade 9 how to draw a Bohr Rutherford Diagram of an atom, they will then be given a random atom to draw.
Check if it's right?