Atomic Theory

Front

What is the mass number?

Back

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

Front

What are the general properties of metals?

Back

Metals are typically shiny, malleable, ductile, and good conductors of heat and electricity.

Front

How do you calculate the number of neutrons in an atom?

Back

The number of neutrons is calculated by subtracting the number of protons from the mass number.

Front

Which elements have the most similar chemical properties?

Back

Elements in the same group of the periodic table, such as K (Potassium) and Na (Sodium), have similar chemical properties.

Front

What characteristics do nonmetals lack?

Back

Nonmetals do not have the characteristic of being shiny.

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

Front

What are protons?

Back

Protons are positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutrons are neutral particles found in the nucleus of an atom.

Front

What are electrons?

Back

Electrons are negatively charged particles that orbit the nucleus of an atom.

Front

What is the atomic number?

Back

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