Matter Part 2 - Atoms and PT

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

True or False: Atoms in the same group of the periodic table have the same number of valence electrons.

Back

True

Front

True or False: Atoms in the same period of the periodic table have the same number of valence electrons.

Back

False

Front

What is the charge of a neutron?

Back

Neutrons are neutral, meaning they have no charge.

Front

What is the charge of a proton?

Back

Protons are positively charged.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What do elements in the same group of the periodic table have in common?

Back

Elements in the same group have similar chemical properties and the same number of valence electrons.

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 is the periodic table?

Back

The periodic table is a tabular arrangement of elements organized by increasing atomic number, showing periodic trends.

Front

What are the three main subatomic particles?

Back

The three main subatomic particles are protons (positive charge), neutrons (neutral charge), and electrons (negative charge).