Chemistry Midterm Review

Front

What is the formula for manganese (IV) sulfide?

Back

MnS₂

Front

Ernest Rutherford discovered that atoms were mostly _____________.

Back

empty space.

Front

What units can be used to express density?

Back

g/mL

Front

In an experiment, what is the dependent variable when testing the effects of type of exercise on heart rate?

Back

heart rate

Front

Anything that has mass and takes up space is called ____________.

Back

Matter

Front

What is the definition of density?

Back

Density is mass per unit volume.

Front

What is the formula for calculating density?

Back

Density = Mass/Volume

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

What is the significance of the atomic number?

Back

The atomic number indicates the number of protons in an atom's nucleus and determines the element's identity.

Front

What is a chemical reaction?

Back

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.