The Law of Conservation of Mass
The Law of Conservation of Mass states that...
What is matter cannot be created or destroyed
The arrow (→) in a chemical equation shows....
Direction of the reaction
The small number after an element showing how many atoms are in a molecule is called a/an...
What is a subscript?
How many oxygen atoms are in 2Fe₂O₃
6 oxygen atoms
How many total atoms are in HS₂
3 total atoms
Matter cannot be created nor destroyed: it can only be...
What is changed or rearranged?
C₆H₁₂O₆ + O₂ ⟶ CO₂ + H₂O
What are the products of the reaction?
carbon dioxide (CO₂) and water (H₂O)
The coefficient in 3H₂O is
3
How many iron (Fe) atoms are in 2Fe₂O₃
4 iron atoms
How many total atoms are in NC₂H₃O₂
What is 8 total atoms
Substances that are being reacted or changed in a chemical reaction are called... (on the eft side of the arrow)
What are reactants?
Reactants are...
The starting substances in a chemical reaction?
How many of each type of atom are there in 4Li₂CO₃
8 lithium (Li), 4 carbon (C), and 12 oxygen (O) atoms
How many nitrogen (N) atoms are in NH₃
1 nitrogen atom
How many total atoms are in NOH
3 total atoms
Substances that are formed from a chemical reaction are called...
Products
Products are...
the substances formed in a chemical reaction
3 represents what in this equation...3H₂O
coefficient
How many nitrogen (N) atoms are in HNO₃
1 nitrogen atom
How many total atoms are in C₆H₁₂O₆
24 total atoms
True or False: A chemical change means that a NEW product is formed because atoms are rearranged.
True
Subscripts are located...
Below the elements
What is the subscript in this example. 3H₂O
2
How many chlorine (Cl) atoms are in CaClO₃
1 chlorine atom
How many hydrogen (H) atoms are in one glucose molecule, C₆H₁₂O₆
12 hydrogen atoms