How do advancements of technology help us update or change various existing concepts? Why do you think collaboration among scientists is important to develop robust body of scientific knowledge

As we drive an automobile, we don't think about the chemicals consumed and produced. Prepare a list of the principal chemicals consumed and produced during the operation of an automobile.

Question 20 Which of the following correctly describes an energy transformation that can be observed in an everyday situation? A Gasoline burns and powers a car engine when the bonds are broken between the molecules and the free electrons flow. This is a transformation between electromagnetic energy and chemical energy.   B Ice in soda glass melts when it is placed in sunlight on a window sill. Radiant energy from the sun is absorbed by the water molecules, which increases the speed that the molecules move. This is a transformation between light energy and kinetic energy.   C A pot of water is heated by a stove as the heat energy moves from the stove top to the metal of the pot. This is a transformation between mechanical energy and thermal energy.   D The sun is powered by the fusion of large atomic nuclei that creates heat and light for the solar system. This is a transformation between chemical energy and light energy.

Length:3.55 cmWidth:2.55 cmMass:0.338 g   Volume of aluminum foil (cm3)

Which of these is a characteristic of science? O It is based on views and opinions. O It is guided by values like trust and truth. O It helps find answers to questions which are not testable. O It gives the same result when experiments are repeated.

Which of the following best defines a scientific theory? A) An 'if, then' statement that can be tested by science. B)A model used to explain how or why a phenomenon occurs. C) A unifying concept; often a mathematical description of the way in which a natural phenomenon occurs. D) A piece of knowledge about the outside world received through the senses or instrumentation. E) Something that is known to be consistent with reality; that which has not been falsified.

Discuss several political,social or personal considerations that might affect a scientist's evaluation of a theory.

What are basic concepts in chemistry? Give 5 examples and explain each.

Is one anomaly enough to disprove a hypothesis? If not, how many are? Why is it important that scientists use all of their results and not just some of them? What should we do if the evidence neither supports nor contradicts the hypothesis?

A student measured too much chemicals for an experiment. Which of these is the proper laboratory technique? Select one: O Place the chemical into the appropriate waste container. O Throw the chemical in the trash. O Rinse the chemical down the sink. O Place the chemical back into the stock bottle.