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WorksheetsM3 4.1 Quiz
Total questions: 10
Worksheet time: 8mins
This diagram shows the chemical reaction that takes place when a candle is burning. What are the reactants in this reaction?
Oxygen and candle wax
Carbon dioxide and water (vapor)
Oxygen and heat
Dark zone and luminous zone
In this chemical reaction, iron and oxygen react to make iron oxide (rust). What is the product of the reaction?
Iron
Oxygen
Iron and oxygen
Iron oxide (rust)
How many hydrogen atoms are there on the reactant and product sides of the photosynthesis equation?
Reactants (2 atoms), products (12 atoms)
Reactants (6 atoms), products (12 atoms)
Reactants (12 atoms), products (12 atoms)
Reactants (6 atoms), products (6 atoms)
Is this equation balanced?
Yes, it is balanced
No, it is not balanced
It is 50% balanced
It is 75% balanced
Is this equation balanced?
Yes, it is balanced
No, it is not balanced
Equations are always balanced
It is 25% balanced
Butane is made out of four carbons and ten hydrogen. What is the molecular formula?
(The molecular formula shows all of the atoms in a molecule)
CH4
C2H5
C4H10
Butane has no molecular formula
Glucose (sugar) is made of six carbon atoms, twelve hydrogen atoms, and 6 oxygen atoms. What is the empirical formula for glucose?
(The empirical formula is a ratio of the elements in a molecule)
CH2O
C6H12O6
CHO
Sugar is not real
What is the Law of Conservation of Mass?
Matter can be created and destroyed
Matter can't be created but it can be destroyed
Matter can be created but not destroyed
Matter can't be created and can't be destroyed
How can you tell that a chemical reaction is taking place in this picture?
There is a change of color
There is a change in temperature
Bubbles have been formed
A solid has been formed
How can you tell that a chemical reaction has taken place in this picture?
Change of color
Change of temperature
Bubbles formed
Solid formed
