15 Questions
What is the volume of the lead ball with a mass of 55.0 grams and a density of 11.4 g/cm3?
4.82 mL
How many significant figures are in the number 0.027090?
5
Which piece of glassware should be used when measuring a specific volume of liquid for a procedure?
Volumetric flask
When rounding the number 2.348615 to 4 significant figures, what is the correct value?
Which of the following statements about matter is FALSE?
Matter can be converted into energy.
Which of the following is NOT a good laboratory practice?
Smelling and tasting chemicals
Which of the following statements about matter is NOT true?
Matter is smooth and continuous
Which state of matter has indefinite shape and is compressible?
gas
What is a pure substance?
composed of only one type of atom or molecule
Which of the following statements about matter is FALSE?
All of the above statements are true
If you hold a solid piece of pure gallium metal in your hand, and your body heat melts the gallium into its liquid form, this illustrates which of the following?
physical change
Which of the following is NOT a technique that could be used to separate a mixture into its components?
stirring
If a solid piece of shiny sodium metal is exposed to chlorine gas, a large amount of heat is released, and the white solid sodium chloride forms. Based on this information, which of the following statements is TRUE?
This process was exothermic
What is the value of 27°C on the Kelvin temperature scale?
300
Which statement below is NOT consistent with the nuclear theory of the atom as proposed by Rutherford?
Most of the volume of an atom consists of empty space through which the electrons move.
Test your understanding of significant figures with this Pre-AP Chemistry midterm assessment. Questions cover the rules for determining significant figures and identifying the correct number of significant figures in a given number.
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