Biology Chem Basics Part 1

An atom that gains electrons becomes ____________charged.

Which of these is the correct symbol for nitrogen?

Neutral atoms have the same number of protons and __________.

Muscles and skin tissues are made primarily of

All of the mass in an atom is located in the

When atoms lose electrons they form ions with a _________ charge.

Sugars and starches are examples of

RNA and DNA are made of

Which of these is the correct symbol for oxygen?

The atom of an element has 3 protons (p+) and 2 electrons (e-). Is this atom neutral or charged?

Fe2+ came from an atom that ________ two electrons.

True or False: Molecules are made up of atoms bonded to each other.

An atom that has gained or lost electrons is called a(n)

The middle region of an atom is called the

Fats and oils are examples of

The basic unit of an element is the _________.

True or False: Electron shells are also called energy levels.

True or False: Elements in a group have similar properties.

Which of these is the correct symbol for hydrogen

Which element will have similar properties to sodium, Na?

True or False: an ion is a charged particle.

An atom of an element has 13 protons and 13 electrons. Is this atom neutral or charged?

Which of these is the correct symbol for carbon?

Molecules are made up of ________ bonded to each other.

An ion with a negative charge is called