Question

1 what is chemistry? (continued)
get it? identify two additional types of models that are used by scientists.
describe scientific investigations by completing the following sentences. pure research becomes when scientists develop a hypothesis based on the data and try to solve a specific problem.
identify six substances mentioned in the book that are important in everyday life and are made of chemicals.
1.
2.
3.
4.
5.
6.
real - world connection
analyze the importance of chemistry in our society using the branches of chemistry as examples.

Explanation:

1. Scientists use many types of models. Two common ones are mathematical models (which use equations and formulas to represent relationships) and computer - simulated models (which use software to mimic real - world processes).
2. When scientists develop a hypothesis based on data to solve a specific problem, pure research becomes applied research as it is now focused on a practical outcome.
3. Common substances made of chemicals important in everyday life include water (H₂O), salt (NaCl), sugar (C₁₂H₂₂O₁₁), vinegar (acetic acid in water), baking soda (NaHCO₃), and ethanol (C₂H₅OH).
4. Chemistry is important in society. For example, in analytical chemistry, we can test the purity of substances in food and water. Organic chemistry is crucial for the development of new drugs and polymers like plastics. Inorganic chemistry helps in the study of metals and minerals used in construction and electronics.

Answer:

1. Mathematical models, Computer - simulated models
2. Applied research
3. 1. Water
4. Salt
5. Sugar
6. Vinegar
7. Baking soda
8. Ethanol