Structure of Atom chem9

Which particle has a positive charge?

• electron
• orbital
• proton
• neutron

What are the maximum number of electrons that go on the first 3 energy levels?

• 2,4,16
• 2,8,18
• 4,8,12
• 3,4,6

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

An element with a mass number of 10 and an atomic number of 6 has how many protons?

• 5
• 8
• 6
• 10

Tags

NGSS.MS-PS1-1

What is the atomic mass of the atom pictured? 

• 11
• 12
• 22
• 23

Tags

NGSS.MS-PS1-1

What does the nucleus of an atom contain?

• Electrons and neutrons
• Protons and neutrons
• Neutrinos and positrons
• Electrons and megatrons

Tags

NGSS.MS-PS1-1

How many protons, electrons and neutrons does an neutral atom of Calcium have?  Its atomic number is 20 and the mass number is 40.

• 20 protons, 18 electrons and 40 neutrons
• 20 protons, 20 electrons and 20 neutrons
• 40 protons, 40 electrons and 20 neutrons
• 20 protons, 18 electrons and 20 neutrons

Tags

NGSS.MS-PS1-1

Which of the following people said the atom was a solid sphere?

• Dalton
• Thompson
• Rutherford
• Bohr

Ag--110 and Ag--112 are two forms of silver with different mass # so they are

• compounds
• isotopes
• orbitals
• neutrons

Tags

NGSS.HS-PS1-8

• Electrons that are inside the nucleus
• Electrons on the outermost energy level 
• Electrons that are closest to the nucleus
• Electrons that have a positive charge

Tags

NGSS.MS-PS1-1