9/3 Chemical Formulas

9/3 Chemical Formulas

Assessment

Flashcard

Science

8th Grade

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a chemical formula?

Back

A chemical formula is a way of expressing the composition of a chemical compound using symbols for the elements and numbers to indicate the quantity of each element.

2.

FLASHCARD QUESTION

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. Elements are listed on the periodic table.

3.

FLASHCARD QUESTION

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together in a fixed ratio.

4.

FLASHCARD QUESTION

Front

What does H2SO4 represent?

Back

H2SO4 represents sulfuric acid, a strong acid composed of 2 hydrogen atoms, 1 sulfur atom, and 4 oxygen atoms.

5.

FLASHCARD QUESTION

Front

How many atoms are in a molecule of C6H12O6?

Back

A molecule of C6H12O6 (glucose) contains 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms.

6.

FLASHCARD QUESTION

Front

What is the significance of subscripts in chemical formulas?

Back

Subscripts in chemical formulas indicate the number of atoms of each element in a molecule. For example, in H2O, the '2' indicates there are 2 hydrogen atoms.

7.

FLASHCARD QUESTION

Front

What is the formula for water?

Back

The formula for water is H2O, which indicates it is made up of 2 hydrogen atoms and 1 oxygen atom.

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