2021 Q1 Level 3 Review

How are elements on the periodic table arranged?

• By Atomic Mass

• By Neutrons

• By Atomic Number

• By Electrons

Carbon (C) has an atomic number of 6. Carbon is next to Nitrogen (N) on the periodic table. Nitrogen has an atomic number of 7. Would it be possible for scientists to discover a new element that will be placed between these 2 elements on the periodic table? Please select the best choice.

• Yes, because the letter "C" and the "N" are far apart in the alphabet

• No, the elements are in order by atomic number and you cannot have half a proton

• Yes, because new things can always be discovered, such as an atom with 6.5 protons.

Look at the periodic table box for the element Gold. How many protons does gold have?

• 79

• 197

• 118

• 24

Tags

NGSS.MS-PS1-1

Look at the box for silicon on the periodic table. What is the chemical symbol for silicon?

• Sn

• Si

• Fe

• Au

Tags

NGSS.MS-PS1-1

The arrow labeled #4 is pointing to:

• Element Symbol

• Atomic Mass

• Atomic Number

• Element name

Atomic mass or mass number, equals the number of:

• protons + electrons

• neutrons - protons

• protons - electrons

• protons + neutrons

The arrow labeled #3 is pointing to:

• Element Symbol

• Atomic Mass

• Atomic Number

• Element Name

Each box on the periodic table represents:

• A mixture

• An element

• A group

• A state of matter

The arrow labeled #2 is pointing to:

• Element Symbol

• Atomic Mass

• Atomic Number

• Element Name

How many electrons will a neutral atom of copper contain?

• 64

• 63

• 29

• 58

Tags

NGSS.MS-PS1-1