End of yr. review ch: 1-4

We know that air is a mixture and not a compound because:

Which of the following is not a physical state of matter?

A measurement of 23 456 mg converted to grams equals:

The accuracy of a measurement:

How many moles of carbon are in a 28.0 g sample?

A metal sample has a mass of 45.65 g. With a volume of 16.9 mL. The density is:

An important result of Rutherford's gold foil experiment was to establish that:

Matter can be defined as anything that:

The atomic number of an element is the same as the number of:

What is the maximum number of electrons that can occupy a 3s orbital?

What is the mass of 1.50 mol of sodium?

Which of the following is best classified as a homogeneous mixture?

How many neutrons are present in an atom with atomic number 50 and mass number of 119?

A theory differs from a hypothesis in that a theory:

Cathode rays are composed of:

Which of the following quantum numbers is often designated by letters s; p; d; f?

What is the maximum number of unpaired electrons that can be placed in a 3p orbital?

Which quantum number is related to the shape of an orbital?

Which particle has the least mass?

Which of the following does NOT contain 2 or more kinds of atoms?

Which subatomic particle has a charge of +1?

Matter that has a definite shape and definite volume is:

Which of the following measurements contains three significant digits?

All measurements in science:

Which element has the noble-gas configuration [Kr]5s²4d²