Chemistry Review Game 1 (Units 2-3)

Front

Which is the halogen in period 5?

Back

Iodine is the halogen in period 5 of the periodic table.

Front

What is the atomic number of Beryllium?

Back

The atomic number of Beryllium is 4.

Front

How many neutrons does an atom of Beryllium have if its mass number is 9?

Back

An atom of Beryllium has 5 neutrons (Mass number - Atomic number = 9 - 4 = 5).

Front

How many valence electrons does Iodine have?

Back

Iodine has 7 valence electrons.

Front

What charge will an atom have if it gains two electrons?

Back

If an atom gains two electrons, it will have a charge of -2.

Front

Isotopes of an element have different number of ___________ and therefore have different masses.

Back

Isotopes of an element have different numbers of neutrons.

Front

What is the definition of a halogen?

Back

Halogens are elements in group 17 of the periodic table, known for being highly reactive nonmetals.

Front

What is the mass number of an atom?

Back

The mass number is the total number of protons and neutrons in an atom's nucleus.

Front

What is the significance of valence electrons?

Back

Valence electrons determine an atom's chemical properties and its ability to bond with other atoms.

Front

What happens to the charge of an atom when it loses electrons?

Back

When an atom loses electrons, it becomes positively charged.