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Chemistry Quest: The Ultimate 11 Challenge!

Authored by Karent Diaz

Chemistry

11th Grade

Used 1+ times

Chemistry Quest: The Ultimate 11 Challenge!
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7 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

When a car burns fuel, carbon dioxide (CO₂) is released into the air. Which type of reaction occurs in the car engine?

Combustion

Decomposition

Synthesis

Displacement

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Balancea la siguiente reacción de combustión: C₃H₈ + O₂ → CO₂ + H₂O

C₃H₈ + 3O₂ → 3CO₂ + 4H₂O

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

C₃H₈ + 4O₂ → 3CO₂ + 3H₂O

C₃H₈ + 2O₂ → CO₂ + 2H₂O

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Un globo contiene 2.5 moles de helio a 298 K y una presión de 1 atm. ¿Cuál es su volumen? (Usa R = 0.082 L·atm/mol·K)

24.5 L

61.1 L

10.2 L

32.8 L

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

¿Cuál es la fórmula correcta del cloruro de cobre (II)?

Cu₂Cl

CuCl₂

Cu₂Cl₃

CuCl

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Si un gas ocupa 15 L a 2 atm, ¿cuál será su volumen a 1 atm, asumiendo temperatura constante?

7.5 L

30 L

15 L

10 L

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Una bicicleta dejada afuera en la lluvia comienza a oxidarse con el tiempo. Esto ocurre debido a la reacción entre el hierro y el oxígeno en el aire. ¿Qué tipo de reacción ocurre ?

Reducción

Oxidación

Combustión

Neutralización

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

On a hot day, if you leave a balloon outside, it may pop. Why does this happen?

The volume of gas increases with temperature

The gas cools and shrinks

The balloon expands because the air is denser

The gas becomes more reactive with heat

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