#1
Which of the following is not a pure substance?
#2
What is the process of separating a mixture into its components using the difference in boiling points of substances?
#3
What is the SI unit of temperature?
#4
Which of the following is an example of a physical change?
#5
What is the chemical symbol for gold?
#6
Which of the following is an example of a homogeneous mixture?
#7
Which of the following is a chemical property of matter?
#8
What is the principle behind chromatography?
#9
What is the technique used to separate a solid from a liquid using a filter paper?
#10
Which of the following is a chemical change?
#11
What is the process of converting a solid directly into vapor without passing through the liquid state called?
#12
Which separation technique is commonly used in the purification of drinking water?
#13
Which separation technique is based on the differences in the rate of movement of particles in a mobile phase through a stationary phase?
#14
What is the technique used to separate components of a mixture based on differences in their solubility in a solvent?
#15
What is the process of converting a gas into a liquid called?
#16
What is the process of separating a mixture into its components by passing it through a medium that selectively retains certain particles?
#17