8th grade review part 2

This subatomic particle always identifies the identity (name) of the element

• Neutron
• Electron
• Proton
• amu

All atoms have a ___________ in the center.

• electron
• cloud
• nucleus
• particle

The nucleus of the atom has  the 
___________ and ___________ in it.

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

A proton has a ___________ charge.

• positive
• negative
• neutral

An electron has a ___________ charge.

• positive
• negative
• neutral

Protons, neutrons, and electrons are called ____________ particles.

• atomic
• subatomic
• nucleus

The diagram shows the arrangement of electrons in a neon atom. How many protons are present in this atom's nucleus?

• 10

• 8

• 2

• There is not enough information to answer this question.

In the diagram, the arrows labeled III point to the atom's ______________.

• Protons

• Neutrons

• Nucleus

• Electrons

Elements with seven valence electrons —

• are highly reactive

• are highly stable

• have a high mass

• have a low mass

Which of these elements would have properties most similar to arsenic (As)?

Use the periodic table and your notes slides.

• Silicon (Si)

• Selenium (Se)

• Tin (Sn)

• Phosphorus (P)