PRE IB CHEMISTRY MIDTERM PRACTICE

Round 1047.78 to three sig figs

• 104
• 105
• 1050
• 1050.00

Tags

CCSS.5.NBT.A.4

How many significant figures does the following number have: 0.002040

• 6
• 4
• 3
• 2

Mg

• 2+
• 1+
• 3+
• -1

Tags

NGSS.HS-PS1-1

S

• 2+
• 1+
• 3-
• 2-

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-4

NGSS.HS-PS1-5

Ne

• 0
• 1+
• 3-
• 2-

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

I

• 2+
• 1+
• 3+
• -1

Tags

NGSS.HS-ESS2-4

NGSS.HS-PS3-1

What electron configuration matches an oxygen atom?

• 1s²2s²2p⁶3s2, 3p⁶4s²3d¹⁰4p⁵
• 1s²2s²2p⁴
• 1s²2s²2p⁶
• 1s²2s²2p⁶3s²3p⁶4s²3d¹

Tags

NGSS.HS-PS1-1

What is this element? 
[Ne] 3s²3p⁶4s²

• Calcium
• Sodium
• Scandium
• Titanium

Tags

NGSS.HS-PS1-1

What is the noble gas configuration for Sulfur?

• [Ar] 3p⁴
• [He] 3s² 3p⁴
• [Ne] 3s² 3p⁴
• [Na] 3s² 3p⁴
  

Tags

NGSS.HS-PS1-1

Which of these elements is the most electronegative?

• oxygen O
• tellurium Te
• Ne neon
• strontium Sr

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2