3. simbol unsur, nomer ataom dan nomer massa

What is the Element Symbol for Carbon?

• Ca

• C

• Cb

• K

What is the Atomic Number for Carbon? (This will ALWAYS be the smaller number reported on the periodic table)

• 6

• 12

• 18

• 13

Tags

NGSS.MS-PS1-1

What is the Atomic Mass for Carbon? (This will ALWAYS be the larger number reported on the periodic table)

• 6

• 12

• 18

• 13

Tags

NGSS.MS-PS1-1

Using the information given, how many electrons does carbon have? How do you know?

• 6, protons must = electrons in a neutral atom

• 12, protons + neutrons = mass number

• 18, add the protons to the atomic mass

• 13, this is an ion

Tags

NGSS.MS-PS1-1

Atomic number tells us... (Select all that apply)

• Number of protons in the nucleus

• The identity of the element

• Number of electrons if it is a neutral atom

• Size of the atom

• Number of Valence electrons

Atomic mass tells us...

• Number of protons in the nucleus

• Number of neutrons in the nucleus

• Number of electrons in the cloud

• BOTH the number of protons and neutrons in the nucleus

What does the 6 represent?

• atomic mass
• atomic number
• element name
• chemical symbol 

Tags

NGSS.MS-PS1-1

What does the C represent?

• atomic mass
• atomic number
• element name
• chemical symbol 

Tags

NGSS.HS-PS1-1

What does the 1.00794 stand for?

• Hydrogen
• atomic number
• atomic mass
• atomic explosion

Tags

NGSS.MS-PS1-1

Which number is the atomic mass?

• 79
• 196.97

Tags

NGSS.MS-PS1-1