8th Grade Chemistry Test

What is the charge of an electron?

• negative
• neutral
• no charge
• positive

Tags

NGSS.MS-PS2-3

What two subatomic particles are found in the nucleus of an atom?

• Protons and electrons
• Electrons and neutrons
• Protons and neutrons
• Protons and atoms

Which best describes the location and charge of a proton?

• Inside the nucleus, positive
• electron cloud, negative
• inside the nucleus, negative
• electron cloud, positive

Which subatomic particle(s) makes up the majority of the mass of an atom?

• Protons
• Electrons
• Electrons and Neutrons
• Protons and Neutrons

Which best describes the location and charge of a neutron?

• nucleus, neutral (no charge)
• electron cloud neutral
• nucleus, positive
• nucleus, negative

How many valance electrons does nitrogen have?

• 5
• 15
• 2
• 4

Tags

NGSS.HS-PS1-1

How many protons does chlorine have?

• 35
• 17
• 18
• 4

How many atoms are present in the following compound?

• 3
• 48
• 4
• 47

Tags

NGSS.MS-PS1-1

Which subatomic particle(s) determines the atomic number?

• protons
• neutrons
• electrons
• protons and neutrons

Which group is the most reactive group of elements?

• Group 1
• Group 4
• Group 8
• Group 18