Dimensional Analysis If snow falls at 1.5 in/hour how many mm/minute is that? (1in=2.54 cm)

Average atomic mass Silicon has three different isotopes. The relative abundance and mass of each are: Si-28 92.23% abundant Si-29 4.67% abundant Si-30 3.10% abundant Calculate the average atomic mass for silicon

Density What is the density of CO gas if 0.196g occupies a volume of 100ml?

Density If a ball with the volume of 215 cm3 has a mass of 250.0 g, what is the density of the object? Will it float in water? (density of water =1g/ml)

What is the evidence for chemical change? (4 things)

Homogenous or heterogenous? Kool-aid Orange juice with pulp Pure air

Separating a mixture Based on physical properties How would you separate a mixture of salt and pepper? How would you separate a mixture of lucky charms? How would you separate a mixture of sawdust, iron and salt?

Element, compound or mixture? Water Aluminum foil Salad Sulfuric acid Marker ink sulfur

Frequency and Wavelength What is the frequency of radiation whose wavelength is 4.32 X 10-9m?

Frequency and Energy Calculate the energy of a wave whose wavelength is 3.56 x 10-7m.

Electron configurations Sulfur Calcium

Lewis Dot Structures for compounds