Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Quizzes

Create quizzes and tests automatically from your content using AI.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing

Search...

Chemical Reactions and Equations - Chapter 1

12 Questions

0 Views

Chemical Reactions and Equations - Chapter 1

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What observation can help us determine whether a chemical reaction has taken place?

Change in density

Change in shape

Change in texture

Change in state (correct)

In the chemical reaction described in Activity 1.1, what are the reactants?

Oxygen and magnesium oxide

Magnesium oxide and oxygen

Magnesium ribbon and oxygen (correct)

Magnesium ribbon and magnesium oxide

What is the product formed in the reaction between lead nitrate solution and potassium iodide solution?

Lead chloride

Potassium nitrate

Potassium iodide

Lead iodide (correct)

How can chemical equations be made more concise and useful?

Using chemical formulae instead of words Signup and view all the answers

Which side of a word-equation represents the products of a chemical reaction?

Right-hand side (RHS) Signup and view all the answers

What happens when magnesium ribbon reacts with oxygen?

It forms magnesium oxide with a dazzling white flame Signup and view all the answers

What happens when an iron nail is left exposed to humid atmosphere?

Rust forms on the iron nail due to a chemical reaction with oxygen and water vapor. Signup and view all the answers

What change occurs when grapes get fermented?

Chemical change due to fermentation process. Signup and view all the answers

What is the result of burning a magnesium ribbon in air?

Magnesium oxide is formed as a result of a chemical reaction. Signup and view all the answers

How can you distinguish between physical and chemical changes?

Physical changes are reversible while chemical changes are irreversible. Signup and view all the answers

What happens during the process of food getting digested in our body?

Chemical reactions break down complex food molecules into simpler substances. Signup and view all the answers

How can we determine that a chemical reaction has taken place?

Observing the formation of new substances with different properties. Signup and view all the answers