Chemistry Part 1 Quiz

Baking soda & vinegar can be used to model a volcanic eruption in a science demonstration because they bubble violently when mixed. What conclusion can be drawn about mixing vinegar & baking soda?

• vinegar & baking soda react to form a new gaseous substance

• baking soda & vinegar make a uniform mixture

• vinegar boils when it comes in contact with baking soda

• baking soda has a lower density than vinegar

Homemade ice cream can be made by adding milk, sugar and vanilla together and bringing the mixture to a temperature below freezing and the mixture freezes. When this is done in the classroom what kind of change is happening?

• chemical change

• physical change

• transitional change

A teacher gives her students a small aluminum cube along with a list of properties. The students are then asked to see if a different metal cube is made of aluminum. Infer the single property listed on the table which would best help the students determine that the cube is aluminum.

• length of each side

• volume

• melting point

• mass

A cup of gold colored metal beads was measured to have a mass 425 grams. By water displacement, the volume of the beads was calculated to be 48.0 cm³. Given the following densities, identify the metal.

Gold: 19.3 g/mL

Copper: 8.85 g/mL

Bronze: 9.87 g/mL

• gold

• copper

• bronze

• none of these

Which of the models represents a compound?

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• 
• 

Which of these models represents an mixture?

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Abner is researching the physical properties of pure copper. He makes the table given. Draw a conclusion about the copper sample using evidence from Abner's table.

• Increasing the mass of copper does not change the physical properties of copper.

• Decreasing the mass of copper decreases the melting point of copper.

• Increasing the mass of copper always changes the color of copper.

• Decreasing the mass of copper increases the density of copper.

The shapes are floating in water. Which shape is the most dense? Least dense?

• Most = B Least = F

• Most = C Least = B

• Most = B Least = C

• Most = A Least = C

A piece of wood that measures 3.0 cm by 6.0 cm by 3.0 cm has a mass of 27.0 g and a volume of 54 cm³. What is the density of the wood? Don't forget proper units.

Will the piece of wood float or sink in water?

• 0.5 g/cm³ - float

• 0.5 g/cm³ - sink

• 2 - sink

• 2 g/cm³ - float

Which is NOT a clue that could indicate a chemical change has occurred?

• Color change

• Odor change

• Energy change (given off or gained)

• Shape change