Atoms

The positive particles of an atom are ___________.

• electrons

• protons

• neutrons

Tags

NGSS.MS-PS1-1

The center of an atom where its neutrons and protons are is called the _____________.

• nucleus

• electron cloud

• center

Tags

NGSS.MS-PS1-1

An atom is made up of protons, neutrons, and electrons.  Which is the smallest subatomic particle?

• Proton
• Neutron
• Electron
• Idontknowatron

In the modern periodic table elements are arranged by:

• atomic mass
• atomic number
• valence electrons
• number of isotopes

How many electrons does Si contain? (click to see image)

• 14
• 28
• 2
• 4

Tags

NGSS.MS-PS1-1

What is the mass number and name of an element with 8 protons and 8 neutrons?

• 16 - Carbon
• 16 - Oxygen
• 24 - Oxygen
• 8 - Neon

Tags

NGSS.MS-PS1-1

If there are more protons than electrons, the

atom is ______ charged.

• positively

• negatively

• neutral

Tags

NGSS.MS-PS1-1

Which of the following lists the two particles found together inside the nucleus of an atom?

• Photons and ions

• Neutrons and electrons

• Protons and neutrons

• Electrons and protons

Tags

NGSS.MS-PS1-1

What is the picture displayed?

• compound

• element

• molecule

Tags

NGSS.MS-PS1-1

The smallest piece of matter that still has the properties of an element is a(n) _________________.

• compound

• electron

• atom

• nucleus

Tags

NGSS.MS-PS1-1