WorksheetsCba Review Chemistry
Total questions: 8
Worksheet time: 8mins
The table below lists some properties of a sample of lauric acid.
Property Value
Volume 79.6 mL
Mass 70.022 g
Boiling point 222°C
Number of moles 0.350
Which of these is an intensive property of this sample?
Volume
Mass
Boiling point
Number of moles
Which of the following is considered to be a chemical property of matter?
Viscosity
Reactivity
Texture
Density
What is an intensive property that can be measured?
Boiling point
Mass
Volume
Length
What is an extensive property that can be calculated?
Boiling point
Volume
Viscosity
Specific heat
A lab technician is working on a sample of brass and testing its properties. Which of the following properties of the brass is an extensive property?
Melting Point: 920°C
Density: 8.52 g/mL
Mass: 62.9 g
Reactivity: Dissolves in strong acid
A student spills a chemical in the laboratory. What should he/she do first?
Clean it up
Tell the teacher
Let it evaporate
Dilute the spill with water
Which of the following would not be classified as a pure substance?
Element
Molecule
Solution
Compound
Which statement describes one of the main differences between a physical and a chemical change?
A chemical change involves reactants and products, whereas a physical change involves only reactants.
A physical change is a change of state, whereas in a chemical change the substance keeps the same form.
A physical change brings about a different form of the same substance, whereas a chemical change forms a different substance.
A chemical change caused by adding or removing heat energy can usually be reversed, whereas a physical change can generally not be reversed.
