Structure of Atom

WHO DISCOVERED ELECTRONS

• J.J.THOMSON

• E.GOLDSTEIN

• RUTHERFORD

• CHADWIK

ATOM HAS A POSITIVELY CHARGED NUCLEUS

THIS WAS PROPOSED BY SCIENTIST:

• J.J.THOMSON

• E.GOLDSTEIN

• RUTHERFORD

• NEILS BOHR

WHICH OF THE FOLLOWING IS RESPONSIBLE FOR MASS OF AN ATOM

• NO OF PROTONS

• NO OF ELECTRONS

• NO OF PROTONS AND NEUTRONS

• NO OF NEUTRONS

Click on the correct box labeling the Nucleus.

Tags

NGSS.HS-PS1-8

A model of a beryllium atom is shown below.
What types of particles are found in the cloud surrounding the atom's nucleus?

• Positively charge particles and negatively charged particles 

• Negatively charged particles only

• Neutral particles and positively charge particles

• Positively charged particles only

Tags

NGSS.MS-PS1-1

The negatively charged particles of an atom are the ______.

• electrons

• protons

• neutrons

• protons & neutrons

Tags

NGSS.MS-PS1-1

Which part of an atom is the proton?

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

label the atom correctly

a

b

c

d

e

electron cloud

proton

neutron

electron

nucleus/mass

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

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