Counting Elements and Atoms Flashcard

Front

How many different elements are present in H₂COCH₂?

Back

3 (Hydrogen, Carbon, Oxygen)

Front

How many atoms of Hydrogen are in H₂O?

Back

2

Front

What is the correct formula for three hydrogen (H), one sulfur (S), and four oxygen (O)?

Back

H₃SO₄

Front

How many atoms are there TOTAL in H₂SO₄?

Back

7

Front

What does the subscript in a chemical formula tell you?

Back

How many atoms are present

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances.

Front

What is a compound?

Back

A substance formed when two or more elements are chemically bonded together.

Front

What is the difference between an atom and a molecule?

Back

An atom is the smallest unit of an element, while a molecule is a group of two or more atoms bonded together.

Front

What is the chemical symbol for Oxygen?

Back

O

Front

What does the formula H₂O represent?

Back

Water, consisting of 2 Hydrogen atoms and 1 Oxygen atom.