In the atomic structure of an atom, what is located in the nucleus?

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

Of the three subatomic particles, which is the smallest and the lightest?

• protons 
• neutrons
• electrons
• They are all equal.

Matter does not include......

• heat

• light

• sound

• all of the above

The atomic number is always the number of ...

• neutrons.
• electrons.
• ions.
• protons.

Use the picture to answer. What is the atomic mass of gold?

• 79

• 196.967

• 197

• 118

Use the picture to answer the questions. How many protons are in a neutral atom of gold?

• 79
• 196.967
• 197
• 118

A mixture that can be separated and the parts are evenly mixed......

• heterogeneous mixture

• substance

• solubility

• homogeneous mixture

Use the picture to answer the question. What is the atomic number of gold?

• 79
• 196.967
• 197
• 118

Tags

NGSS.HS-PS1-1

The electron cloud model is made up of mostly....

• electron cloud

• empty space

• neutrons

• protons

Matter is anything that ...

• has mass and volume.
• takes up space.
• can be tasted or smelled.
• is all of these.