Sorting Materials into Groups

Which of the following is NOT an example of a round-shaped object?
a) Rubber ball
b) Football
c) Notebook
d) Glass marble

• Orange
• CD case
• c) Notebook
• Basketball

Which material is commonly used to make lunch boxes?

• Metal
• b) Plastic
• Ceramic
• Paper

What is the main reason for grouping materials?

• a) To create a large collection
• c) To make objects heavier
• b) To understand their properties easily
• d) To change their color

Which of the following materials is used to make both tables and chairs?

• e) Plastic
• f) Metal
• g) Fabric
• c) Wood

what are materiald with "luster" ? Explain with examples. What causes these materials to lose their luster?

Which of the following is an example of an opaque material?

• a) Metal
• c) Wood
• b) Air
• d) Clear glass

What is a common characteristic of metals like iron, copper, and aluminum?

• a) They are soft
• c) They are transparent
• d) They dissolve in water
• b) They have a shiny surface

Which of these materials is soft and can be easily scratched?

• a) Aluminum
• c) Gold
• d) Granite
• b) Chalk

Which of the following materials dissolves completely in water?

• d) Sand

• e) Baking soda
• c) Sugar
• f) Flour

Which of these liquids does NOT mix well with water?

• d) Olive oil
• e) Glycerin
• c) Kerosene
• f) Ethanol