If I drink eat three apples a day, my cholesterol levels will decrease.
What is the dependent variable in this scenario?
Cholesterol levels
100
If an object has a mass in grams and a density in g/L, what unit would the calculated volume be in?
Liters
100
Name the following: MgS PO2
Magnesium Sulfide Phosphorus Dioxide
100
What piece of lab equipment is the best at measuring volumes of liquids?
Graduated Cylinder
100
Which one of the following elements is in the same period as Boron? Sodium Neon Gallium Krypton
Gallium
200
What state of matter does not have a definite shape or volume?
Gas
200
If an object has a mass of 0.46 g and a density of 1.40 g/mL, what would its volume be? (I WILL BE PICKY ABOUT YOUR ANSWER)
0.33 mL
200
Which one of the following is an empirical formula? C3H9 C2H2 C4H7
C4H7
200
What is the term for atoms of the same element that have different numbers of neutrons?
Isotopes
200
What are the 7 naturally occurring diatomic elements?
Br I N Cl H O F
300
In an experiment, we found the density of an object to be 3.50 g/mL. If the accepted density value of this object is 2.87 g/mL, what is the percent error?
21.95%
300
How many protons, neutrons, and electrons does Titanium have?
22 p, 26 n, 22 e
300
Calculate the percent composition of sodium in Na3PO4.
42.1 % Na
300
How many moles of potassium bromide are in 9.2 g of KBr?
0.077 moles
300
How many kg of nitrogen gas would be made from 43 L at STP?
0.054 kg
400
What is the average atomic mass of a an element given the following isotopes: 35.8% M-130.2 64.2% M-134.1
132.7
400
How many protons, neutrons, and electrons does the Lithium ion have?
3 p, 4 n, 2 e
400
Write the formulas for the following: Chromium (II) Nitride Ammonium Sulfate
Cr3N2 (NH4)2SO4
400
Write and balance the following reaction: Hydrobromic acid (HBr) reacts with Zinc metal to form Zinc (II) Bromide and Hydrogen gas.
2HBr + Zn = ZnBr2 + H2
400
How many grams of Zinc metal are required to react with 25 g of HBr?
10.1 g Zn
500
Convert the following: 25 g to kg 0.030 mg to g
0.025 kg 3 x 10^-5 g
500
Which of the following is a molecular compound? CaCO3 C3H8 NaCl
C3H8
500
What is the name for the substance that restricts how much product can be made in a chemical reaction?
Limiting Reactant
500
What would be the empirical formula for a compound containing the following: 8.96 g of N 20.48 g of S 18.24 g of F
N2S2F3<sub
500
In a reaction, the two reactants present are 2LiOH and 1H2SO4. If there are 3.6 grams of LiOH and 7.5 grams of H2SO4, which is the limiting reactant?