Chem for Bio

Front

What are atoms of the same element with different numbers of neutrons called?

Back

Isotopes

Front

True or False: Compounds consist of at least two or more elements chemically bonded together.

Back

True

Front

Which of the following elements is a metal: Hydrogen, Iron, Carbon, Oxygen?

Back

Iron

Front

What is the atomic number of an element?

Back

The atomic number of an element is the number of protons in its nucleus.

Front

These are macromolecules made mostly of carbon and hydrogen, they form oils, fats, and waxes. What are they?

Back

Lipids

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together.

Front

Define an element.

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is the difference between an atom and a molecule?

Back

An atom is the smallest unit of an element, while a molecule is a group of two or more atoms bonded together.

Front

What are the three main subatomic particles?

Back

Protons, neutrons, and electrons.

Front

What is the charge of a proton?

Back

A proton has a positive charge.