Question

fast as the plant that received only water. the botanist concludes that the nutrients help the plant grows faster.
restate and answer the questions below:

1. what was the test (independent) variable in the botanists experiment?

the nutrients

1. what was the outcome (dependent) variable in the botanists experiment?

physical properties of matter practice ----use the list above to help answer the questions below.

1. a spoon is placed in hot soup, and the handle quickly becomes warm.

which physical property of matter is being demonstrated in this scenario?

1. a scientist heats ice until it changes into liquid water.

which physical property of matter is being demonstrated in this scenario?

1. a student connects a wire to a light bulb and battery. the bulb lights when a metal strip is added, but not when a rubber strip is used.

which physical property of matter is being demonstrated in this scenario?

1. two unknown powders are tested. one sinks in oil, while the other floats.

which physical property of matter is being demonstrated in this scenario?

Explanation:

1. Heat transfer from hot soup to spoon handle shows thermal conductivity.
2. Changing ice to water is a phase - change property of matter.
3. Metal allowing electricity to flow and light the bulb while rubber not doing so shows electrical conductivity.
4. One powder sinking and the other floating in oil shows density.

For the plant experiment:

• The independent variable is what is changed (nutrients). The dependent variable is what is measured as a result of the change. In this case, it is the growth rate of the plant.

Answer:

1. The growth rate of the plant
2. Thermal conductivity
3. Phase - change property
4. Electrical conductivity
5. Density