Food Science Semester 1 Exam

Front

What is a solution?

Back

A homogeneous mixture where the solute is completely dissolved in the solvent.

Front

Define an element.

Back

A pure substance made up of only one kind of atom.

Front

What is a colloid?

Back

A type of mixture where the particles are larger than those in a solution but not heavy enough to settle out.

Front

What is a pure substance?

Back

A substance that has definite physical and chemical properties such as appearance, melting point, and reactivity.

Front

Which of the following is an element: Salt (NaCl), Water (H2O), Oxygen (O), Carbon Dioxide (CO2)?

Back

Oxygen (O) is an element.

Front

What is a suspension?

Back

A heterogeneous mixture where particles are large enough to settle out over time.

Front

What distinguishes a homogeneous mixture from a heterogeneous mixture?

Back

A homogeneous mixture has a uniform composition throughout, while a heterogeneous mixture does not.

Front

What is the difference between a compound and a mixture?

Back

A compound is a substance formed when two or more elements chemically bond, while a mixture is a combination of two or more substances that retain their individual properties.

Front

What is the melting point?

Back

The temperature at which a solid becomes a liquid.

Front

What is reactivity in terms of chemical properties?

Back

Reactivity refers to how readily a substance combines chemically with other substances.