Flashcard (Lesson 3.1 - 3.2)

Front

Atoms with the same number of protons but different numbers of neutrons are called _____

Back

Isotopes

Front

Which of the following is NOT found in the nucleus of an atom?

Back

Electrons

Front

Which particles constantly move around the center of an atom and contain a negative charge?

Back

Electrons

Front

Sodium has 11 protons and 11 electrons. Sodium gives an electron away. Sodium now has 11 protons and 10 electrons. Sodium represents a(n) _____ because it has unequal numbers of protons and electrons.

Back

Ion

Front

Which element is most likely to have the lowest melting point?

Back

Oxygen (O)

Front

What is the charge of a proton?

Back

Positive

Front

What is the charge of a neutron?

Back

Neutral

Front

What is the charge of an electron?

Back

Negative

Front

What is the center of an atom called?

Back

Nucleus

Front

What are the three main subatomic particles?

Back

Protons, Neutrons, Electrons