SCIENCE UNIT REVIEW

You want to find out which is more dense- milk or water. This question represents.

• conclusion of the experiment

• an observation of the experiment

• a problem of the experiment

• a variable of the experiment

An orderly, systematic approach to problem solving

• experiment

• scientific method

• conclusion

• theory

When a medical technologist perform such test as blood tests, urinalysis, fecalysis and x rays, he is performing a/ an:

• Gathering data

• Hypothesis

• Conclusion

• Problem

What part of scientific method tells us the real answer to the problem?

• Experimenting

• Hypothesis

• Conclusion

• Analysis

Which does not describe an element?

• Examples are aluminum, gold and carbon

• Represented by a chemical symbol

• It cannot be decomposed into simpler substance

• Consists of two or more kinds of atoms

Which is not a compound in the given substances?

• baking soda

• rusted iron nail

• silver spoon

• carbon dioxide

Which description does not refer to a compound?

• Consists of only one kind of atom

• It can be decomposed into simpler substance

• Composed of two or more kinds of atoms

• Examples are water, salt and calcium fluoride

Which of the following is an element?

• Magnesium oxide

• Potassium

• NaOH

• Dry ice

The following are compounds except ________________

• phosphorus

• sodium chloride

• calcium oxide

• sugar

It is an element that strengthen bone and tooth structure.

• Carbon

• Calcium

• Helium

• Iron