STC BIOL 2401 CH.2 Practice Question Quiz

Which of the following best defines matter?

• Anything that has energy and occupies volume

• Anything that occupies space and has mass

• Any substance that can be converted into energy

• Anything composed only of atoms

Tags

NGSS.MS-PS1-5

Which type of energy is stored in chemical bonds?

• Mechanical energy

• Chemical energy

• Electrical energy

• Radiant energy

Tags

NGSS.HS-PS1-4

Potential energy is best described as:

• Energy that is actively doing work

• Energy that is stored and inactive

• Energy from moving particles

• Energy from radiation

Tags

NGSS.HS-PS2-4

Which four elements make up about 96% of body weight?

• Hydrogen, Oxygen, Carbon, Nitrogen

• Hydrogen, Carbon, Sodium, Potassium

• Oxygen, Nitrogen, Sodium, Iron

• Carbon, Hydrogen, Chlorine, Sulfur

What is the smallest particle of an element that retains its properties?

• Molecule

• Compound

• Atom

• Neutron

Protons are found in the nucleus and have a:

• Negative charge

• Positive charge

• Neutral charge

• Variable charge

The atomic number of an element represents the number of:

• Protons

• Neutrons

• Electrons plus neutrons

• Protons plus neutrons

Radioisotopes are important in medicine because they:

• Have the same stability as isotopes

• Are chemically inactive

• Emit radiation as they decay

• Never change in mass

Tags

NGSS.HS-PS1-8

A molecule is:

• A mixture of substances

• A combination of two or more atoms bonded together

• Always a compound

• A physical mixture of elements

Tags

NGSS.HS-LS1-6

What is a colloid?

• A homogeneous mixture

• A solution with visible particles that settle

• A heterogeneous mixture that appears milky and has large solutes that don’t settle

• A mixture where substances are chemically bonded