NMAT MASTERCLASS - EXAM 1

Which branch focuses on substances that do not contain carbon atoms?

• Analytical Chemistry

• Organic Chemistry

• Biochemistry

• Inorganic Chemistry

Which branch of chemistry focuses on the study of chemical makeup and processes within living organisms?

• Biochemistry

• Physical Chemistry

• Inorganic Chemistry

• Organic Chemistry

Which of the following best describes Organic Chemistry?

• Study of energetics of chemical system

• Study of carbon-containing compounds

• Study of compounds w/o carbon

• Study of biomolecules and metabolism.

Which of the following is NOT a homogeneous mixture?

• Seawater

• Bronze alloy

• Salad

• Air

What is the definition of an element?

• A pure substance made of two or more different types of atoms

• A pure substance that is always metallic

• A pure substance that can be broken down using chemical means

• A pure substance that cannot be broken down into simpler substances

Which of the following is a compound?

• Oxygen

• Water

• Nitrogen

• Steel Alloy

Which separation method relies on differences in boiling points?

• Distillation

• Filtration

• Chromatography

• Mechanical separation

If you want to separate iron filings from a mixture of sand, which method should you use?

• Filtration

• Distillation

• Evaporation

• Magnetic separation

In paper chromatography, what property of substances allows them to be separated?

• Their boiling points

• Their solubility in water

• Their different affinities for the stationary and mobile phases

• Their color intensity

What is one advantage of using centrifugation over other separation methods?

• It requires less time than evaporation.

• It can separate mixtures with very small particle sizes.

• It can effectively separate components based on density differences in a short time.

• It does not require any additional equipment.