Atom

Which particles make up the nucleus of an atom? (you can choose more than one answers)

• proton

• electron

• neutron

The size of the negative charge of an electron is exactly the same as the size of the positive charge on a proton. What is the overall charge of the helium atom shown in the diagram?

• positive

• negative

• neutral

Tags

NGSS.MS-PS1-1

Which one is the result of Rutherford's gold foil experiment?

• atom is mostly empty space, with their particles packed into a dense nucleus at the centre

• the electrons are scattered

  throughout the atom

• the electrons and the protons are grouped closely together in the center

• the protons and neutrons are scattered

  throughout the atom

Tags

NGSS.HS-PS1-8

Particles in an atom that are neutral which means they have no charge are _____.

• negatrons

• electrons

• neutrons

• protons

A particle that moves around the nucleus is a(n)...

• Proton

• Neutron

• Electron

• Quark

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

• protons 

• neutrons

• electrons

• They are all equal.

How many protons, neutrons, and electrons does sulfur have? It's atomic number is 16 and it's atomic mass is 32.

• 16 protons, 16 neutrons, and 16 electrons

• 16 protons, 32 neutrons, and 16 electrons

• 16 protons, 16 neutrons, and 32 electrons

• 32 protons, 16 neutrons, and 16 electrons.

Tags

NGSS.MS-PS1-1

The particles with no charge in an atom are the _______.

• electrons

• neutrons

• protons

• protons and neutrons

Tags

NGSS.MS-PS1-1

Silicon has a mass number of 28 and an atomic number of 14. How many protons does it have?

• 28

• 14

• 42

• 7

Tags

NGSS.MS-PS1-1

What does the black spot of the image represent?

• Element

• Nucleus

• Electron Cloud

• Atom

Tags

NGSS.MS-PS1-1