Review

What are the reactants in chemical equation below?

CO₂ + H₂O -> C₆H₁₂O₆ + 0₂

• C₆H₁₂O₆

• CO₂ and H₂O

• H₂O

• C₆H₁₂O₆ and 0₂

It is a substance that enters a chemical reaction.

• Product

• Reactant

What are the elements are there in Aluminum Phospide?

• Aluminum and Phospide

• Aluminum and Phosphorus

What is the chemical formula for Calcium Oxide?

• Ca₃O₂

• Ca₂O

• CaO

• CaO₂

What is the chemical formula for Calcium Chloride?

• CaCl

• CaCl₂

• CaCl₃

• CaCl₄

How many hydrogen atoms are in the chemical formula 2H₂O?

• 2

• 4

• 6

• 8

How many oxygen atoms are in the chemical formula 3NaOH?

• 1

• 2

• 3

• 4

Carbon dioxide and water react to form glucose and oxygen gas. What are the products in the statement?

• carbon dioxide and water

• glucose

• glucose and oxygen gas

• water

Who first created the periodic table of elements?

• Dmitri Mendel

• Dmytri Mendeelev

• Dmitri Mendeleev

• Dimitry Mendeleev

It is a substance that produced in chemical reaction.

• Product

• Reactant