Counting Coins

no mistake

11 drops in 11-20

27 drops in 31-40

21 drops in 21-30

The number of drops that fit on a coin in 1 attempt (trial)

The number of times you got that count.

Coins can be created or destroyed, violating conservation of mass.

The total mass of coins remains constant, similar to conservation of mass.

Coins can change in mass, unlike conservation of mass.

Conservation of mass only applies to gases, not coins.

Law of Conservation of Energy

Law of Conservation of Mass

Law of Conservation of Charge

Law of Conservation of Momentum

By using a magnet to attract certain coins

By shaking the container to sort them by size

By placing them in water to see which float

By measuring their mass and volume to calculate density

Formulating a hypothesis

Conducting an experiment

Analyzing data

Drawing a conclusion

Counting coins is always accurate but not precise.

Counting coins is precise but not always accurate.

Counting coins can be both accurate and precise.

Counting coins is neither accurate nor precise.

The reaction created new coins.

Coins were lost or gained, indicating an error.

The reaction destroyed some coins.

The reaction had no effect on the coins.

Each coin represents a significant figure.

The total number of coins is the only significant figure.

Counting coins has no relation to significant figures.

Significant figures are only used in chemical equations.

Using coins to balance a scale

Using coins to measure temperature

Using coins to test pH levels

Using coins to calibrate a speedometer