Understanding Chemical Reactions: Reactivity and Combustion

Understanding Chemical Reactions: Reactivity and Combustion

Assessment

Interactive Video

Chemistry, Science

6th - 8th Grade

Hard

Created by

Aiden Montgomery

FREE Resource

The video tutorial explores chemical reactions, focusing on reactivity and combustion. Reactivity involves the interaction of substances, influenced by valence electrons, as illustrated with sodium and neon. Combustion is a rapid reaction with oxygen, releasing energy, with examples like coal and hydrogen. The video concludes with a reminder to practice kindness.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main difference between reactivity and combustion?

Combustion is a slow process, unlike reactivity.

Reactivity involves the interaction of substances, while combustion involves rapid reaction with oxygen.

Reactivity is a type of combustion reaction.

Reactivity involves oxygen, while combustion does not.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which factor primarily influences the reactivity of a substance?

The temperature of the environment

The number of protons in the nucleus

The arrangement of valence electrons

The atomic mass of the substance

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is sodium considered highly reactive?

It has a full outer electron shell.

It is a noble gas.

It has one electron in its outer shell that it can easily lose.

It has more protons than electrons.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to sodium when it reacts with water?

It forms a stable compound.

It reacts explosively.

It remains unchanged.

It loses its reactivity.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which element is satisfied with its electron configuration and is less reactive?

Neon

Oxygen

Sodium

Hydrogen

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of oxygen in a combustion reaction?

It acts as a byproduct.

It acts as a catalyst.

It acts as an oxidizer.

It acts as a fuel.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the original substance called in a combustion reaction?

Oxidizer

Product

Fuel

Catalyst

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