Procedures in research method under chemistry​

Step 1: Make observations.

Step 2: Formulate a hypothesis.

Step 3: Design and perform experiments.

Step 4: Accept or modify the hypothesis.

Step 5: Development into a law and/or theory.

Contributions & Attributions.

Explanation:

Classify each statement as a law, a theory, an experiment, a hypothesis, an observation.

Ice always floats on liquid water.

Birds evolved from dinosaurs.

Hot air is less dense than cold air, probably because the components of hot air are moving more rapidly.

When 10 g of ice were added to 100 mL of water at 25°C, the temperature of the water decreased to 15.5°C after the ice melted.

The ingredients of Ivory soap were analyzed to see whether it really is 99.44% pure, as advertised.

Solution

This is a general statement of a relationship between the properties of liquid and solid water, so it is a law.

This is a possible explanation for the origin of birds, so it is a hypothesis.

This is a statement that tries to explain the relationship between the temperature and the density of air based on fundamental principles, so it is a theory.

The temperature is measured before and after a change is made in a system, so these are observations.

This is an analysis designed to test a hypothesis (in this case, the manufacturer’s claim of purity), so it is an experiment.

c. legislation should seek to resolve social problems.