atoms , molecules and atomic structure

What is atomic number?

• Number of protons in an atoms 
• Number of neutrons in an atom
• Mass of an atom
• Charge on an atom

Which subatomic particles are found in the nucleus of an atom?

• Protons and Electrons
• Protons and Neutrons
• Neutrons and Electrons
• Protons, Neutrons and Electrons

Tags

NGSS.MS-PS1-1

What electrical charge does a proton have?

• +1
• 0
• -1
• +2

What mass does a neutron have?

• 1 amu

• 0 amu

• -1 amu

• +2 amu

How many protons does an aluminum atom have?

• 27

• 14

• 40

• 13

How many electrons does a sodium atom have?

• 23

• 11

• 12

• 34

Tags

NGSS.MS-PS1-1

The mass number of an element that has 18 protons, 18 electrons, and 19 neutrons is _____.

• 12.5

• 13

• 25

• 37

Tags

NGSS.MS-PS1-1

What element has 9 protons, 9 electrons, and 10 neutrons?

• nitrogen

• oxygen

• fluorine

• neon

Tags

NGSS.MS-PS1-1

What element is represented in this Bohr Model? 

• Carbon
• Hydrogen
• Aluminum
• Lithium

Tags

NGSS.MS-PS1-1

Which particle is negatively charged?

• proton
• atom
• neutron
• electron