G6-SCI-L2 Sorting Materials into groups

What is the primary reason for grouping materials according to the text?

• To make them look organized
• For convenience and to study their properties
• To separate expensive and cheap materials
• To keep similar colors together

Which of the following is NOT mentioned as a property of materials in the text?

• Hardness
• Solubility
• Transparency
• Weight

What type of material allows you to see through it clearly?

• Opaque
• Translucent
• Transparent
• Reflective

Which of these objects would most likely float in water?

• A metal spoon
• A wooden block
• A glass marble
• A pebble

What happens when you mix salt with water?

• It floats
• It sinks
• It dissolves
• It evaporates

Which material is described as allowing light to pass through but not clearly?

• Opaque
• Transparent
• Translucent
• Reflective

What property does a shiny object possess?

• Transparency
• Opacity
• Solubility
• Lustre

Which of these is NOT a way to test for lustre mentioned in the text?

• Cutting the material
• Rubbing with sandpaper
• Looking at it in sunlight
• Observing a freshly cut surface

What determines the choice of material for making an object?

• Only its appearance
• Its properties and intended use
• Its cost
• Its availability

Which of these is an example of an opaque material?

• Glass
• Water
• Plastic wrap
• Wood