Midterm review

Which of the following is NOT a part of the scientific method?

• experimenting

• observing

• proving

• hypothesizing

You are wanting to measure the effect of different amounts of oxygen on the rate of yeast growth. What is the dependent variable?

• amount of oxygen

• rate of yeast growth

• room temperature

• none of the above

The ability for one substance to dissolve in another is

• Color

• Hardness

• Solubility

• Density

What two units are needed to calculate density?

• Mass and length

• Volume and length

• Mass and volume

• Mass and temperature

The ability for a solid to become a liquid is known as

• Hardness

• Melting point

• Density

• Solubility

True or False: The melting point of a substance does not change when the amount of substance increases.

• True

• False

The amount of matter in a substance is

• Volume

• Density

• Mass

• Melting point

The amount of space an object takes up is

• Volume

• Mass

• Density

• Solubility

Material composed of two or more elements or compounds that are physically mixed together but NOT chemically combined

• element

• compound

• mixture

A pure substance made of only one kind of atom.

• element

• mixture

• compound