Atomic structure and the periodic table

Subatomic particle found in the nucleus are _________.

• protons and neutrons
• electrons and neutrons
• protons and electrons
• electrons only

Tags

NGSS.MS-PS1-1

Total number of  ______ is equal to the atomic number of an element.

• protons
• protons and neutrons
• neutrons
• electrons

Tags

NGSS.MS-PS1-1

What charge does a proton have?

• positive
• negative
• no charge
• neutral

What charge does an electron have?

• positive
• negative
• neutral
• no charge

Tags

NGSS.MS-PS2-3

What charge does a neutron have?

• positive
• negative
• no charge
• neutral

The size of a neutron is about the same size as a(n) _______.

• electron
• proton
• atom

Where are valence electrons found?

• in the outermost energy level
• in the innermost energy level
• in the nucleus
• in the electron cloud

Tags

NGSS.HS-PS1-1

The atomic number of an element is found

• at the top of an element's box on the periodic table
• at the bottom of an element's box on the periodic table
• not on the periodic table
• calculated by adding the protons and neutrons of an atom

Horizontal rows are called _____.

• periods
• groups
• families
• atomic numbers

Vertical columns are called _____.

• groups
• periods
• atomic numbers
• atomic columns