Let's solve each problem step by step using the
density formula:
>
Density = Mass / Volume
---
Problem 1:
You have a mineral with:
- Volume = 15 cm³
- Mass = 45 g
$$
\text{Density} = \frac{45\, \text{g}}{15\, \text{cm}^3} = 3\, \text{g/cm}^3
$$
✔ Answer: Its density is
3 g/cm³
---
Problem 2:
Different mineral with:
- Volume = 15 cm³
- Mass = 75 g
$$
\text{Density} = \frac{75\, \text{g}}{15\, \text{cm}^3} = 5\, \text{g/cm}^3
$$
✔ Answer: Its density is
5 g/cm³
---
Problem 3:
Which mineral is more dense?
- First mineral: 3 g/cm³
- Second mineral: 5 g/cm³
Since
5 > 3, the second mineral is more dense.
✔ Answer:
The second mineral is more dense than the first one.
---
Problem 4:
Cube of sugar:
- Mass = 12.8 grams
- Side length = 2 cm
#### Step 1: Find volume
Volume of a cube = side × side × side
$$
\text{Volume} = 2 \times 2 \times 2 = 8\, \text{cm}^3
$$
#### Step 2: Calculate density
$$
\text{Density} = \frac{12.8\, \text{g}}{8\, \text{cm}^3} = 1.6\, \text{g/cm}^3
$$
✔ Answer:
- mass =
12.8 g
- volume =
2 × 2 × 2 = 8 cm³
- D =
12.8 / 8 = 1.6 g/cm³
---
✔ Final Answers Summary:
1. Density =
3 g/cm³
2. Density =
5 g/cm³
3. The
second mineral is more dense than the
first one.
4. Mass =
12.8 g, Volume =
8 cm³, Density =
1.6 g/cm³
Let me know if you'd like this turned into a printable worksheet format!
Parent Tip: Review the logic above to help your child master the concept of density problems worksheet with answers.