Gen Chem 1 Exam Jam S26

Atomic Structure Traps

100

Fe³⁺ has how many electrons?

A. 26
B. 23
C. 29
D. 3

23

200

Isotopes differ in:

A. protons
B. electrons
C. neutrons
D. charge

neutrons

300

Which experiment proved atoms are mostly empty space?

A. Thomson
B. Dalton
C. Rutherford
D. Bohr

Rutherford

400

What determines chemical identity?

A. neutrons
B. electrons
C. protons
D. mass

mass

500

An atom with 17 protons and 18 electrons is:

A. neutral
B. +1
C. -1
D. -17

-1

Stoichiometry Traps

100

First step in stoichiometry:

A. grams → moles
B. balance equation
C. multiply coefficients
D. find molar mass

balance equation

200

Why convert grams → moles?

A. easier math
B. required
C. mole ratios use moles
D. no reason

mole ratios use moles

300

Limiting reactant is:

A. smallest mass
B. smallest moles
C. runs out first
D. highest coefficient

runs out first

400

If LR is wrong, what happens?

A. only part wrong
B. everything wrong
C. just units wrong
D. no effect

everything wrong

500

Doubling all coefficients does what?

A. changes ratios
B. no change
C. doubles moles only
D. halves ratios

no change

Reaction Traps

100

HCl + NaOH →

A. acid
B. base
C. salt + water
D. gas

salt + water

200

Pb(NO₃)₂ + KI →

A. gas

B. precipitate

C. acid

D. no reaction

precipitate

300

Oxidation means:

A. gain e⁻

B. lose e⁻

C. gain H

D. lose O

lose e⁻

400

Reduction means:

A. gain e⁻

B. lose e⁻

C. lose mass

D. gain protons

gain e⁻

500

Redox involves:

A. protons
B. electrons
C. neutrons
D. heat

electrons

Solution Traps

100

Molarity =

A. mol/L
B. g/L
C. mol/kg
D. g/mol

mol/L

200

Dilution increases or decreases concentration?

A. increases
B. decreases
C. same
D. random

decreases

300

H₂SO₄ is:

A. monoprotic
B. diprotic
C. triprotic
D. neutral

diprotic

400

Equivalence point means:

A. equal volumes
B. equal moles
C. equal concentration
D. no reaction

equal moles

500

Adding water to solution does what?

A. increases molarity

B. decreases molarity

C. no effect

D. doubles molarity

decreases molarity

Gas Law Traps

100

PV = nRT uses temperature in:

A. °C
B. K
C. °F
D. atm

K

200

If temperature doubles (K), volume does what?

A. halves
B. doubles
C. same
D. zero

doubles

300

Decrease volume → pressure:

A. decreases
B. increases
C. same
D. zero

increases

400

Gas density depends on:

A. pressure
B. temperature
C. molar mass
D. all

all

500

Why can’t you use °C in gas laws?

A. inconvenient
B. wrong units
C. not absolute scale
D. too large

not absolute scale