Counting Atoms Practice

Counting Atoms Practice

Assessment

Flashcard

Chemistry

7th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

Student preview

quiz-placeholder

15 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What are reactants in a chemical equation?

Back

Reactants are the substances that undergo a chemical change in a reaction, found on the left side of a chemical equation.

2.

FLASHCARD QUESTION

Front

In the equation 2H₂ + O₂ → 2H₂O, what are the reactants?

Back

The reactants are 2H₂ + O₂.

3.

FLASHCARD QUESTION

Front

How many elements are in the compound C₂H₈O?

Back

There are 3 elements: Carbon (C), Hydrogen (H), and Oxygen (O).

4.

FLASHCARD QUESTION

Front

How many Chlorine (Cl) atoms are in MgCl₂?

Back

There are 2 Chlorine (Cl) atoms.

5.

FLASHCARD QUESTION

Front

What does the arrow in a chemical equation represent?

Back

The arrow represents 'makes' or 'produces', indicating the direction of the reaction.

6.

FLASHCARD QUESTION

Front

What is a coefficient in a chemical equation?

Back

A coefficient is a number placed in front of a compound to indicate how many molecules or atoms are involved in the reaction.

7.

FLASHCARD QUESTION

Front

What is a subscript in a chemical formula?

Back

A subscript is a small number written to the right of an element symbol that indicates the number of atoms of that element in a molecule.

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Google

Continue with Google

Email

Continue with Email

Classlink

Continue with Classlink

Clever

Continue with Clever

or continue with

Microsoft

Microsoft

Apple

Apple

Others

Others

Already have an account?