The Amazing World of Solutes, Solvents, and Solutions
Class 8 · Science · 13 Questions
State whether the statements given below are True [T] or False [F]. Correct the false statement(s).
Fill in the blanks.
You pour oil into a glass containing some water. The oil floats on top. What does this tell you?
A stone sculpture weighs 225 g and has a volume of 90 cm³. Calculate its density and predict whether it will float or sink in water.
Which one of the following is the most appropriate statement, and why are the other statements not appropriate?
You have a bottle with a volume of 2 litres. You pour 500 mL of water into it. How much more water can the bottle hold?
An object has a mass of 400 g and a volume of 40 cm³. What is its density?
Object A has a mass of 200 g and a volume of 40 cm³. Object B has a mass of 240 g and a volume of 60 cm³. Which object is denser?
Reema has a piece of modeling clay that weighs 120 g. She first moulds it into a compact cube that has a volume of 60 cm³. Later, she flattens it into a thin sheet. Predict what will happen to its density.
A block of iron has a mass of 600 g and a density of 7.9 g/cm³. What is its volume?
Research project on Dead Sea: Why is there no aquatic life in the Dead Sea? Try to find out if there are any other similar water bodies.
Investigate how well common salt dissolves in different solvents, such as water, vinegar, and oil. Compare the solubility of salt in each solvent and record your observations.
Debate in class—Is water truly the most versatile solvent?