WorksheetsChemical Equations-BrainPop
Total questions: 10
Worksheet time: 8mins
Which of the following is a chemical reaction?
Sodium and chlorine atoms bond to form salt molecules
Ice melts to form water
Carbon dioxide freezes to form dry ice
Salt and water mix to form salt water
In the equation shown, what are the reactants?
Hydrogen atoms
Hydrogen and oxygen molecules
Water molecules
Ice crystals
Sulfuric acid is made of two hydrogen atoms (H), one sulfur atom (S), and four oxygen atoms (O). What is its molecular formula?
What is the best synonym for the word "stoichiometry?"
Combining atoms
Balancing chemical equations
Discovering new chemical formulas
Breaking the chemical bonds that hold molecules together
The chemical symbol "Ni" most likely represents:
Carbon
Antimony
Lead
Nickel
How do the products of chemical reactions compare to their reactants?
The products usually weigh more than the reactants.
The products often have completely different properties than the reactants.
The products usually have more atoms than the reactants.
The products are usually more toxic than the reactants.
What's the problem with the chemical equation shown?
There's a missing hydrogen in the reactants
There's a missing oxygen in the product.
There's an additional oxygen in the product
There's an additional hydrogen in the reactants.
What's the easiest way to balance a chemical equation?
Trial and error
Using the periodic table
Complex algebra
Calculus
Which reactant is missing from the equation shown?
One hydrogen atom
One phosphorus atom
Three hydrogen atoms
One oxygen atom
What is the product of the equation shown?
