#4 Chemical Formulas

Front

What is a chemical formula?

Back

A chemical formula is a way of expressing the number and type of atoms in a substance using symbols and numbers.

Front

How many atoms are in H₂SO₄?

Back

7

Front

What are the elements present in C₆H₁₂O₆?

Back

Carbon (C), Hydrogen (H), and Oxygen (O).

Front

Is H₂O an element or a compound?

Back

Compound

Front

What is a physical change?

Back

A physical change is when objects or substances undergo a change that does not change their chemical composition.

Front

What does the subscript in a chemical formula indicate?

Back

The subscript indicates the number of atoms of the element in the molecule.

Front

What is the total number of different elements in H₂SO₄?

Back

3 (Hydrogen, Sulfur, Oxygen).

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

How many total atoms are in C₆H₁₂O₆?

Back

24 (6 Carbon + 12 Hydrogen + 6 Oxygen).

Front

What is the chemical formula for water?

Back

H₂O