Final Review: Unit 1 Atomic Theory

Front

What is the atomic number of Silicon (Si)?

Back

14

Front

How many protons does Silicon (Si) have?

Back

14

Front

What is the definition of a proton?

Back

A positively charged particle found in the nucleus of an atom.

Front

What is the definition of an electron?

Back

A negatively charged particle that orbits the nucleus of an atom.

Front

What is a neutron?

Back

A neutral particle found in the nucleus of an atom.

Front

What is the definition of valence electrons?

Back

Electrons in the outermost energy level of an atom.

Front

How many valence electrons does Silicon (Si) have?

Back

4

Front

What is the Bohr model?

Back

A model of the atom that depicts electrons in fixed orbits around the nucleus.

Front

What is the significance of the atomic number?

Back

It determines the identity of an element and the number of protons in the nucleus.

Front

What is the relationship between protons and electrons in a neutral atom?

Back

In a neutral atom, the number of protons equals the number of electrons.