Unit 3 sect 3 - 4  Review

Unit 3 sect 3 - 4 Review

Assessment

Flashcard

Chemistry

8th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the law of conservation of mass?

Back

In a chemical reaction, the mass of the products equals the mass of the reactants, meaning the number of atoms in the products will always equal the number of atoms in the reactants.

2.

FLASHCARD QUESTION

Front

What is the pH scale?

Back

The pH scale measures how acidic or basic a solution is, ranging from 0 (very acidic) to 14 (very basic), with 7 being neutral.

3.

FLASHCARD QUESTION

Front

What pH value indicates an acidic substance?

Back

A pH value below 7 indicates an acidic substance.

4.

FLASHCARD QUESTION

Front

What is flammability?

Back

Flammability is a chemical property that describes how easily a substance can ignite and burn.

5.

FLASHCARD QUESTION

Front

What are indicators in chemistry?

Back

Indicators are substances used to determine the pH of a solution, indicating whether it is acidic, basic, or neutral.

6.

FLASHCARD QUESTION

Front

What is a chemical change?

Back

A chemical change is a process where substances transform into different substances, such as baking a cake.

7.

FLASHCARD QUESTION

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

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