Unit 1
What should you do if you catch on fire?
Wrap yourself in the fire blanket. Your friends should spray you with the fire extinguisher/pour baking soda on you
What are the three types of subatomic particles, what are their charges, where are they located in the atom?
Proton (+) and neutron (0): in nucleus
Electron (-): in rings
What type of bond would boron and chlorine have?
What type of reaction is this? Zn(s) + 2 HCl(aq) → ZnCl2(aq) + H2(g)
Single replacement
What type of reaction is this? CH4(g) + 2 O2(g) → CO2(g) + 2 H2O(g)
Combustion
What are three physical properties and two chemical properties?
Physical: Color, density, size, hardness, melting point, etc.
Chemical: Flammability, acidity, toxicity, reactivity, heat of combustion
Why is the mass on the periodic table a decimal?
It is the average of all isotopes of an element found in nature
What is the relationship between bond number, strength, energy, and length?
As more bonds = stronger, more energy, shorter
What is the mass of a glucose molecule (C6H12O6)?
180.156 g/mol
If I make Kool-aid, what is the solute, solvent, and solution?
Solute: powder
Solvent: water
Solution: drink
Give the answer with proper sig figs:
2.04x106 + 8.051x104
2.12x106
What is the pattern for atomic radius on the periodic table? Why?
Increases down: adding rings
decreases left to right: more +and- attraction
What type of formula is this: HCOCHOH5H
If this is not the empirical formula, what would be?
Molecular.
Empirical = C6H12O6
What are the results in an acid base reaction?
Water and an ionic compound (salt)
What is the name of the compound: P2I7
Diphosphorus helptaiodide
Draw the breakdown of the classification of pure substances (draw the flowchart)
Picture
What is the long form and short form electron configuration for
Long: 1s2 2s2 2p6 3s2 3p6 4s2 3d6
Short: [Ar] 4s2 3d6
What would the compound be for Antimony (V) and Sulfur?
Sb2S5
If I start with 50.0g Zn, how many moles of ZnCl2 will be made assuming that I have unlimited amounts of HCl?
0.765 moles ZnCl2
Zn + 2 HCl → ZnCl2 + H2
Balance the Equation:
C8H18 + O2 → CO2 + H2O
2C8H18 + 25O2 → 16CO2 + 18H2O
Convert 32.5 miles/sec into inches/hr. Write in sci notation and with proper sig figs
7413120000
7.41x109
How many electrons can fit in the third energy level? Where are they located?
18 electrons: 3s = 2, 3p = 6, 3d = 10
What is the compound made from pyrophosphate and ammonium?
(NH4)4P2O7
Predict the product: BaCl2 + Na2SO4 →
BaCl2 + Na2SO4 → BaSO4 + 2 NaCl
If 6.785x1020 molecules of CH4 combusts, how many grams of water will be produced? Give in proper sig figs.
0.04056 g H2O
CH4 + 2 O2 → CO2 + 2 H2O