Quiz #1-3 PRACTICE: Properties, Changes & Types of Matter
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Which of the following CANNOT be classified as a pure substance?
Which of the following is true for all chemical reactions?
The total mass of the products decreases.
The total mass of the reactants equals the total mass of the products.
The total mass of the reactants increases.
The total mass of the products is greater than the total mass of the reactants.
Which of the following is a valid difference between a mixture and a compound?
A mixture can only be separated into its components by chemical means.
A compound can only be separated into its components by chemical means.
A mixture must be uniform in composition.
A compound is made up of more than one phase.
All of the following changes to a substance are chemical changes EXCEPT:
Which of the following properties can only be determined through a chemical change?
Which of the following is NOT an example of matter?
All of the following changes to a metal are physical changes EXCEPT:
Matter is defined as anything that:
can be weighed on a balance
has a fixed volume and weight
has a definite volume
has mass and takes up space
Which of the following is a true statement about compounds?
They have variable compositions.
They can be physically separated into their constituent elements.
They are pure substances.
They have properties similar to those of their constituent elements.
Consider the chemical reaction in which carbon (C) reacts with oxygen gas (O2) to produce carbon dioxide (CO2). What mass of carbon dioxide would be produced if 24 grams of carbon reacted completely with 64 grams of oxygen?
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