The Periodic Table

What two particles make up the nucleus of an atom?

• neutrons and electrons

• electrons and protons

• protons and neutrons

• valence electrons and neutrons

The mass of an electron is

• roughly 0 AMU.

• equal to the mass of a proton.

• roughly 1 AMU.

• equal to the mass of a neutron.

Where are the electrons located in an atom?

• electron cloud

• nucleus

• outer orbit

• inner orbit

I have 18 protons, 18 electrons and have a mass number of 40. How many neutrons do I have?

• 18

• 19

• 40

• 22

I am an atom with 16 protons, 15 neutrons, and 16 electrons. What is the charge of my nucleus?

• -16

• +16

• neutral

• + 15

Which two groups are the most highly reactive?

• Group 4A and 2A

• Group 8A and 1A

• Group 1A and 7A

• Group 3A and 6A

After many years of experimenting, scientists finally agree the atom is consists of

• negative particles that orbit around a dense positively charged nucleus.

• neutral particles in an electron cloud surrounding a negative nucleus.

• protons that orbit a dense negatively charged nucleus.

• neutrons and protons that are randomly scattered throughout the atom.

Tags

NGSS.MS-PS1-1

Which of the following is not a property of metals?

• brittle
• malleable
• lustrous
• conductive

What period and group is Sulfur (S)?

• Period 2, Group 1

• Period 3, Group 15

• Period 3, Group 16

• Period 2, 14

Which elements have the most similar chemical properties?

• K and Na
• K and Ca
• K and Cl
• K and S