Structure of the Atom

An element is

• The smallest part of an element

• A particle that atoms are made of

• A substance that cannot be broken down into simpler substances by chemical means

An atom is

• The smallest part of an element

• A particle that an atom is made of

• A substance that cannot be broken down into simpler substances

Who discovered that the atom has a nucleus?

• Marie Curie

• Dimitri Mendeleev

• Niels Bohr

• Ernest Rutherford

Sub- Atomic Particles are

• particles that atoms are made of

• particles that solutions are made of

• particles that metals are made of

Tags

NGSS.MS-PS1-1

Where are Protons located in an atom?

• Electron cloud

• Nucleus

• Outside

• Around

Where are electrons located in an atom?

• electron cloud

• Middle

• nucleus

• Electron shell

Neutrons are found in the ______________ of the cell

The mass of a proton/neutron is ...

• 1 a.m.u

• 1 m/s

• 1/1836 a.m.u

electrons have a ________________ charge

• Positive

• Negative

• Neutral

Tags

NGSS.MS-PS2-3

protons have a ________________ charge

• negative

• postive

• neutral