A substance that contains two or more atoms, chemically joined, that are the same.

A substance that contains two or more atoms, chemically joined, that are different.

This substance cannot be broken down.

The composition of this substance can change, and when it does, its physical characteristics do as well.

This technique was used to separate the compound water in class.

Which box shows atoms of a pure metal?

Which box shows molecules of an element?

Which box shows a solid compound?

Which box shows a mixture of elements?

Which box shows a mixture of molecules?

You have a solution that contains water and rubbing alcohol. What method could you use to separate them?

The heating curve shown was formed when a mixture of water and ethanol was distilled. At what temperature would you want to run the distillation if you wanted to remove the ethanol (labelled at A) from the water (labelled at B)?

Which box(es) shows a mixture?

Which box contains only compounds?

Suppose that 1 volume of gas A combined with three volumes of gas B to form one volume of product when measured at the same pressure and temperature. Which drawing accurately reflects this situation and what the product would look like?

If the gases shown were to be triatomic (3 atoms chemically joined together), how many volumes of gas would have been produced?

Sulfur and oxygen form several compounds. Two of these have the following mass composition:

Compound A: 26.7 g of P, 53.6 g of O

Compound B: 31.8 g of P, 16.3 g of O

What are the formulas for each compound? (ratio is mass O/mass P)

The atomic symbol for sulfur is

The name of the element with the symbol Cu is

The symbol for gold is

What is the name of the element whose symbol is Na?

What is the mass percent of each element in a compound of carbon and oxygen if you have 55.85 g of iron and 15.99 g of oxygen?

You analyze a sample of a compound that contains Carbon, Hydrogen, and Oxygen and determine that it contains 40% Carbon, 7% Hydrogen, and 35% Oxygen by mass. If the mass of the sample was 180 g, how much of the mass would be due to Hydrogen?

Pb is the elemental symbol for

Potassium has the elemental symbol of

Which of the following shows the appropriate symbols for gold and silver?

Which of the following shows the appropriate names that go with the symbols?