Conversions
Heat/Temperature Conversions
Periodic Table/Atoms
Significant Figures/Scientific Notation
Miscellaneous
100
How many nanometers are in a meter?
10^9 nm
100
How many Kcals in 42.6 Joules (1 cal = 4.184 J - exact)
0.0102 kcal
100
Which of the following is a Halogen?
Mg, Mn, Li, Ne, or F
Fluorine (F)
100
Write this number in scientific notation:
93,000,000
9.3 x 10^7
100
What's the definition of a pure substance?
A type of matter with a fixed or definite composition - element or compound
200
How many gigagrams are in 83,760 mg?
8.376 x 10^-8 gigagrams
200
What is 479.32 Kelvin in Fahrenheit?
402.94°F
200
A substance is used as a semiconductor, is it most likely to be a metal, metalloid, or nonmetal?
Metalloid
200
This number contains how many significant figures?
207,000.
6 significant figures
200
Which of these isn't a chemical change?
Fireworks, boiling water and salt, digesting a donut or iron rusting?
Boiling water and salt
300
How many inches in 2.23 km? (1 mile = 1.61 km, 5,280 ft = 1 mile, 12 in = 1 ft)
87,800 in
300
Label the heating curve
1 = gas
2 = condensation
3 = liquid
4 = freezing
5 = solid
300
An atom of Gallium has a mass number of 68. How many protons, electrons, and neutrons does it have?
31 protons, 31 electrons, and 37 neutrons.
300
Solve the math problem. Provide the answer in the correct number of significant figures:
12.5849 mg + 2.4 mg = ?
15.0 mg
300
What is the specific heat of a metal if 9.8g releases 40.2J of heat when the temperature is raised from 14.2K to 23.7K
0.43 J/gK
400
A piece of wood weighs 2.15 lbs. How much do 20 pieces of wood weigh in kilograms? (2.20 lb = 1 kg).
19.5 kg
400
How many Calories are in a stick of butter with 0g of carbs, 92.2g of fat, and 1.001g of protein.
Carbohydrate = 4 kcal/g
Fat = 9 kcal/g
Protein = 4 kcal/g
800 kcals
400
Do isotopes differ in the number of protons, electrons, neutrons, or any mix of the three?
Differ in number of neutrons (different mass numbers)
400
Solve the math problem. Provide the answer in the correct number of significant figures:
(7.67 cm x 3.1334 cm) / 2.775 cm = ?
8.66 cm
400
When water freezes, is energy absorbed or released?
Released
500
A doctor prescribes a dosage of 0.25 mg of a drug. Each pill contains 10 micrograms of a drug. How many pills do they need?
25 pills
500
How many Kilojoules are released when 13.4 g of water vapor condenses?
Heat of Fusion = 334 J/g
Heat of Vaporization =2260 J/g
30.3 kJ
500
The isotope Mg25 has mass of 24.99 amu and a percent abundance of 10.13 %. What is it's contribution to atomic mass in amu?
2.531 amu
500
Solve the math problem. Provide the answer in the correct number of significant figures:
3340 ft x 1.2 ft = ?
4.0 x 10^3 ft^2
500
The specific heat of gold is 129 J/kg∙K. What is the quantity of heat energy (in joules) required to raise the temperature of 100.g of gold from 319.2K to 71.4°C?
326,000 J