Periodic Table and atoms

What is the number of protons that the element in this image contain?

• 14
• 7
• 15
• 18

Tags

NGSS.MS-PS1-1

The first energy level can hold up to how many electrons?

• 8
• 4
• 2
• 5

Tags

NGSS.MS-PS1-1

What is the atomic mass of "F"

• 9
• 18
• 17
• 19

Tags

NGSS.MS-PS1-1

all matter is made of what

• energy

• atoms

• electrons

• compounds

The positive particles of an atom are

• electrons

• positrons

• neutrons

• protons

the central region of an atom where its neutrons and protons are is its

• nucleus

• electron cloud

• core

• center

an atom with atomic number 6 would have how many protons

• 6

• 12

• 3

• cannot be determined

Particles in an atom that are neutral and have no charge are

• negatrons

• electrons

• neutrons

• protons

Which of the following is a negatively charged subatomic particle?

• Electron

• Proton

• Neutron

• Quark

The particles that are found in the nucleus of an atom are

• neutrons and electrons

• electrons only

• protons and neutrons

• protons and electrons