Chemistry Review Challenge

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HS chem practice test

Créé par

edwin villhauer

United States

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Froggy Jumps Chemistry Review ChallengeVersion en ligne HS chem practice test par edwin villhauer 1 What is Avogadro's number? a 6.022 × 10^23 b 6.022 × 10^22 c 6.022 × 10^24 2 What is the pH of a neutral solution at 25°C? a 7.0 b 14 c 0 3 Which statement is NOT part of Dalton's atomic theory? a Atoms are indivisible b Atoms can be created or destroyed in chemical reactions c Atoms of the same element are identical 4 Which statement correctly describes atomic radius trends? a Atomic radius increases down a group b Atomic radius is the same for all elements in a group c Atomic radius increases across a period 5 Which type of bond involves electron sharing between atoms? a Covalent bond b Metallic bond c Ionic bond 6 Balance this equation: Fe + O2 -> Fe2O3. What is the coefficient before Fe? a 2 b 3 c 4 7 How do you calculate molar mass of CO2? a 12.01 + 2×16.00 = 44.01 g/mol b 12.01 + 32.00 = 44.01 g/mol c 12.01 + 2×8.00 = 28.01 g/mol 8 What is percent by mass of solute in a solution? a (mass of solute / mass of solvent) × 100% b (mass of solvent / mass of solution) × 100% c (mass of solute / mass of solution) × 100% 9 Which defines Arrhenius acids and bases? a Acids produce H+ in solution; bases produce OH− b Acids lower pH; bases raise pH without ions c Acids donate electrons; bases accept protons 10 What is oxidation state of O in most compounds? a −2 b +2 c 0

Froggy Jumps

Chemistry Review ChallengeVersion en ligne

HS chem practice test

par edwin villhauer

What is Avogadro's number?

6.022 × 10^23

6.022 × 10^22

6.022 × 10^24

What is the pH of a neutral solution at 25°C?

7.0

Which statement is NOT part of Dalton's atomic theory?

Atoms are indivisible

Atoms can be created or destroyed in chemical reactions

Atoms of the same element are identical

Which statement correctly describes atomic radius trends?

Atomic radius increases down a group

Atomic radius is the same for all elements in a group

Atomic radius increases across a period

Which type of bond involves electron sharing between atoms?

Covalent bond

Metallic bond

Ionic bond

Balance this equation: Fe + O2 -> Fe2O3. What is the coefficient before Fe?

How do you calculate molar mass of CO2?

12.01 + 2×16.00 = 44.01 g/mol

12.01 + 32.00 = 44.01 g/mol

12.01 + 2×8.00 = 28.01 g/mol

What is percent by mass of solute in a solution?

(mass of solute / mass of solvent) × 100%

(mass of solvent / mass of solution) × 100%

(mass of solute / mass of solution) × 100%

Which defines Arrhenius acids and bases?

Acids produce H+ in solution; bases produce OH−

Acids lower pH; bases raise pH without ions

Acids donate electrons; bases accept protons

What is oxidation state of O in most compounds?

−2

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Chemistry Review Challenge

Froggy Jumps

À propos de cette activité

Créé par

Téléchargez la version pour jouer sur papier

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Froggy Jumps

Chemistry Review ChallengeVersion en ligne

par edwin villhauer

What is Avogadro's number?

What is the pH of a neutral solution at 25°C?

Which statement is NOT part of Dalton's atomic theory?

Which statement correctly describes atomic radius trends?

Which type of bond involves electron sharing between atoms?

Balance this equation: Fe + O2 -> Fe2O3. What is the coefficient before Fe?

How do you calculate molar mass of CO2?

What is percent by mass of solute in a solution?

Which defines Arrhenius acids and bases?

What is oxidation state of O in most compounds?

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