Q1 Benchmark Review - Chemistry 1

What is the weighted average of all isotopes of an atom?

• isotope number

• atomic number

• mass number

• atomic mass

In the isotope symbol what is the mass number?

• 6

• 13

• 7

• 12

Tags

NGSS.MS-PS1-1

Which subatomic particles contribute to the mass of an atom?

• protons only

• protons and electrons

• electrons only

• protons and neutrons

Uranium-238 has how many protons, neutrons, and electrons?

• 238 protons, 238 neutrons, 238 electrons

• 92 protons, 146 neutrons, 92 electrons

• 92 protons, 238 neutrons, 92 electrons

• 146 protons, 92 neutrons, 146 electrons

Tags

NGSS.MS-PS1-1

The alkaline earth metals are in group ____.

• 1A

• 7A

• 2A

• 3A

The alkali metals are in group ____.

• 1A

• 7A

• 2A

• 3A

The halogens are in group ____.

• 1A

• 7A

• 2A

• 3A

groups/families are ______ on the periodic table

• columns

• rows

series are ______ on the periodic table

• columns

• rows

Which family will have a +1 charge on an ion?

• 2A

• 7A

• 3A

• 1A