Chemistry Semester 1 Review

The number of hydrogen atoms in 1 mole of H₂O molecules is 

The number of oxygen atoms in 1 particle of Mg(NO₃)₂

What is 78^oC in units of Kelvin?

__ is the amount of matter in an object, and ____ is the amount of space taken up by an object.

Classify the substance shown in box Z.

Classify the substance shown in picture W below.

The apparatus pictured below would be best used to separate a mixture of

Who is credited with the development of our first atomic theory?

A gas is held at a constant temperature while its volume is reduced.  What happens to the gas?

What is contained within the bubbles that are observed when water boils?

A substance that consists of two or more different elements chemically combined

When water condenses from a gas to a liquid

When a liquid is cooled, its thermal energy

Which of the following changes will NOT increase pressure?

A substance that consists of only one type of atom 

Which line in the graph below represents a substance with a lower density?

The best answer for the value of 6.1/43.8 is:

What mass of aluminum has the same number of particles as 35.5 g of chlorine?

According to Avogadro's Hypothesis, 1 L of H₂ gas and 1 L of NH₃ gas at same T and P have same

The apparatus pictured below would be appropriate for separation of