Will a cork float? Will a gold coin sink? Fifth graders match cork, steel nails, vegetable oil, and gold coins to their density values and predict their behavior in water using the 1 g/cm cubed benchmark.
Students calculate density when given mass and volume, name the graduated cylinder as the volume tool, and explain why density is a physical property that doesn't change with sample size. They also describe how the water displacement method measures volume by watching the level rise. These problems give fifth graders the quantitative confidence to compare any two materials.
Style:
Properties of Matter
Part A: Fill in the Blank
Write the missing word or number on each line.
1. Density equals mass divided by volume, and it tells how tightly packed matter is.
2. The density of pure water is about 1 gram per cubic centimeter.
3. An object that floats in water must have a density less than 1 g/cm³.
4. A graduated cylinder is used to measure the volume of a liquid in milliliters.
5. If a block has a mass of 20 g and a volume of 10 cm³, its density is 2 g/cm³.
6. Two objects can have the same volume but different masses because they are made of different materials.
7. When you place an object in water and it sinks, its density is greater than water.
8. The water displacement method measures volume by seeing how much the water level rises.
9. Density is a physical property because it stays the same no matter how much of the substance you have.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
Cork
→ Floats — density around 0.24 g/cm³, much lighter than water
Sinks — very high density metal, about 19.3 g/cm³
Steel nail
→ Sinks — density about 7.8 g/cm³, much denser than water
Floats — density around 0.92 g/cm³, lighter than water
Vegetable oil
→ Floats — density around 0.92 g/cm³, lighter than water
Sinks — density about 7.8 g/cm³, much denser than water
Gold coin
→ Sinks — very high density metal, about 19.3 g/cm³
Floats — density around 0.24 g/cm³, much lighter than water
Properties of Matter
★ Part A: Fill in the Blank
Write the missing word or number on each line.
1) Density equals mass divided by volume, and it tells how tightly packed matter is.
2) The density of pure water is about 1 gram per cubic centimeter.
3) An object that floats in water must have a density less than 1 g/cm³.
4) A graduated cylinder is used to measure the volume of a liquid in milliliters.
5) If a block has a mass of 20 g and a volume of 10 cm³, its density is 2 g/cm³.
6) Two objects can have the same volume but different masses because they are made of different materials.
7) When you place an object in water and it sinks, its density is greater than water.
8) The water displacement method measures volume by seeing how much the water level rises.
9) Density is a physical property because it stays the same no matter how much of the substance you have.
★ Part B: Matching
Match each item on the left to the correct answer on the right.
1) Match each item to its correct answer.
Cork
→ Floats — density around 0.24 g/cm³, much lighter than water
Sinks — very high density metal, about 19.3 g/cm³
Steel nail
→ Sinks — density about 7.8 g/cm³, much denser than water
Floats — density around 0.92 g/cm³, lighter than water
Vegetable oil
→ Floats — density around 0.92 g/cm³, lighter than water
Sinks — density about 7.8 g/cm³, much denser than water
Gold coin
→ Sinks — very high density metal, about 19.3 g/cm³
Floats — density around 0.24 g/cm³, much lighter than water
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