Bellwork 2: Week 7 2nd 9 Weeks

What is the molar mass of Cl₂?

• 17 g/mol

• 35.5 g/mo;

• 71.0 g/mol

• 89 g/mol

What id the molar mass of UF₆?

• 101 g/mol

• 238 g/mol

• 257 g/mol

• 352 g/mol

Calculate the molar mass of Ba(C₂H₃O₂)₂

• 255.3 g/mol

• 237.3 g/mol

• 228.3 g/mol

• 196.3 g/mol

The molar mass of an element is equal to its...

• Atomic mass
• Atomic number
• Oxidation number
• Valence electrons

How do covalent bonds form?

• Donating & receiving valence e- between atoms.
• Opposite slight charges attract each other between compounds.
• Scientists are still not sure how they form.
• Sharing valence e- between atoms.

Tags

NGSS.MS-PS1-1

What two types of atoms make a covalent bond?

• 2 Nonmetals
• 1 Nonmetal and 1 Metal
• 2 Metals
• 2 Noble Gases

Tags

NGSS.MS-PS1-1

Which of the following is NOT formed by a covalent bond?

• K₂S
• H₂O
• I₂
• CO₂

Tags

NGSS.MS-PS1-5

Name the following compound: 
N₂O₄

• dinitrogren tetraoxide
• tetranitrogen dioxide
• nitrogen oxide
• dinitrogen tetraoxygen

Tags

NGSS.MS-PS1-1

Name the following compound: 
CO₂

• monocarbon dioxide
• carbon oxide
• carbon dioxide
• oxygen carbonide

Write the formula for:
dinitrogen pentoxide

• NO
• N₂O₅
• 2NO₅
• O₅N

Tags

NGSS.MS-PS1-1