Atoms, Ions, Molecules, Mixtures

The nucleus of an atom is made up of ___________________.

• Protons and Neutrino

• Neutrons and Electrons

• Protons and Neutrons

• Protons and Electrons

The image shows the periodic grid of potassium. How many electrons are found in the potassium atom?

• 19

• 20

• 39

• 40

Tags

NGSS.MS-PS1-1

What charge does an atom have when it GAINS electrons?

• Positive

• Negative

• Neutral

Tags

NGSS.HS-PS1-2

What subatomic particle changes in an ion?

• The number of electrons

• The number of protons

• The number of neutrons

Tags

NGSS.HS-PS1-7

What type of atom is element C?

• Normal atom

• Ion

• Isotope

Tags

NGSS.MS-PS1-1

Sodium has an atomic number of 11, how many protons does this atom have?

• 22
• 11
• 12
• 2

Tags

NGSS.MS-PS1-1

Where is the proton located?

• In the very dense nucleus

• Floating around in the negative electron cloud

• In the loose nucleus

• In the positive electron cloud

Tags

NGSS.HS-PS1-8

The following element key shows how many protons?

• 16
• 15.999
• Oxygen
• 8

Tags

NGSS.MS-PS1-1

What is at the center of every atom?

• An electron

• A compound

• A molecule

• A nucleus

Tags

NGSS.MS-PS1-1

Which two particles make up the nucleus of an atom?

• Protons and Electrons
• Protons and Neutrons
• Molecules and Compounds
• Neutrons and Electrons

Tags

NGSS.HS-PS1-8