Exam 1: Chemistry

Saccharin is used in some artificial sweeteners.Saccharin has been shown to be a very weak carcinogen (a substance that causes cancer)in animal tests,but there is little evidence of carcinogenicity in humans.Studies have also shown that artificial sweeteners provide little benefit to those who want to lose weight.The DQ for saccharin is

The "Aristotelian philosophy" is generally non-productive.What does that mean?

Which of the following CANNOT be the chemical symbol for an element?

The results of an experiment are easiest to interpret when the experiment has ________ variable(s).

In the SI system of measurement the unit of mass is the

On Mars,gravity is one-third that on Earth.What would be the mass on Mars of a person who has a mass of 90 kilograms (kg)on Earth?

Mass is a better measure of the amount of matter than weight is because

An example of a physical change is a gas becoming a liquid.

What is the chemical symbol for iodine?

DDT was widely used as an insecticide during and following World War II.However,the egg shells of birds that live in areas where DDT was used were very thin,and the young did not hatch.This is an example of

A scientific hypothesis is

________ are pure substances.

The label on a bottle of shampoo lists many ingredients,such as water,sodium laureth sulfate,lauramide DEA,sodium chloride,etc.From this information,shampoo is best classified as

Kim Chemist proposes that increasing the proportion of butadiene in her glue formulation will make the glue stickier.Her proposal is called a(n)

A train robber in a western movie steals two gold ingots,each of which has a volume of 1000.cm³.The density of gold is 19.3 g/cm³.What is the mass of the two ingots?

What is the difference between basic research and applied research? Give an example of each.

The prefix kilo means ________.

The energy content of foods is stated on food labels in Calories.The Calorie is equal to

When doing a risk-benefit analysis and determining DQ,which situation is often the most difficult to evaluate from both an individual and societal perspective?

The density of mercury is 13.6 g/cm³.What approximate mass of mercury is required to fill a 4.0 ounce bottle? An ounce is approximately 30 cm³.