Dec 5-Unit 1 Review

All matter is made of _________.

• energy 
• atoms 
• electrons 
• compounds 

What is at the center of every atom?

• An electron
• A compound
• A molecule
• A nucleus

The positively charged particles of an atom are the ________.

• electrons
• protons
• neutrons
• protons & neutrons

What does the nucleus of an atom contain?

• Electrons and neutrons
• Protons and neutrons
• Neutrinos and positrons
• DNA and RN

__________ are negatively charged particles that are in the orbitals around the nucleus.

• protons

• nucleus

• neutrons

• electrons

A proton has a ___________ charge.

• positive

• negative

• neutral

• massive.

The particles with no charge in an atom are the _______.

• electrons
• neutrons
• protons
• protons and neutrons

What is the chemical symbol for Hydrogen

• H

• He

• Hy

• Hg

Value representing the number of protons in an element

• Atomic Number

• Valence Electrons

• Mass Number

What is this table

• Elemental Table of Periods

• Atomic Table of Atoms

• Periodic Table of Elements