AP Chem Quiz 1

Which beaker(s) contain a pure substance? (check all that apply)

• A

• B

• C

• D

Tags

NGSS.MS-PS1-1

Classify the Sample.

• Pure Substance

• Mixture of Elements

• Mixture of Compounds

• Mixture of Elements and Compounds

Tags

NGSS.MS-PS1-1

What do the peaks on the mass spectrum represent?

• anions
• different isotopes
• atoms with differing numbers of electrons
• numbers of electrons

What do the heights of the peaks represent in the mass spectrum?

• number of isotopes
• relative abundance of each isotope
• average atomic mass
• charge:mass ratio

How many isotopes are shown in this mass spectrum?

• 1
• 84
• 86
• 4

How many carbon atoms are in methane?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

How many hydrogen atoms are in butane

• 4
• 6
• 8
• 10

What precipitate forms when you mix lead (II) nitrate with sodium chloride?

• sodium nitrate 
• lead (II) chloride 
• sodium lead
• chloride nitrate 

Tags

NGSS.HS-PS1-2

Which is the correct net ionic equation for the reaction of AgNO₃ and CaCl₂?

• Ca²⁺(aq) +  2Cl^- (aq) → CaCl(s)
• Ag⁺(aq)  +  Cl^- (aq) → AgCl(s)
• Ag +  Cl  →  AgCl
• Ag⁺  +  Ca²⁺   →Ag₂Ca (s)