1.4 Matter And The Scientific Method

7 Questions | By Brielmannh | Updated: Mar 20, 2022 | Attempts: 418

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Many science classes begin with the scientific method. Here we consider a systematic approach to discovery, including observation, hypothesis, experiment, conclusions, controls, and theories and laws.

Questions and Answers

1.

A concise verbal or mathematical statement of a relationship between phenomena that is always the same under the same conditions is referred to as
- A.
  
  A hypothesis
- B.
  
  A law
- C.
  
  A theory
- D.
  
  None of the above
2.

A unifying principle that explains a body of facts and relations is referred to as
- A.
  
  A hypothesis
- B.
  
  A law
- C.
  
  A theory
- D.
  
  None of the above
3.

Which of the following is an example of a physical property?
- A.
  
  Corrosiveness of sulfuric acid
- B.
  
  Toxicity of cyanide
- C.
  
  Flammability of gasoline
- D.
  
  Neutralization of stomach acid with an antacid
- E.
  
  Lead becomes a liquid when heated to 601C
4.

Which one of the following is an example of a physical property?
- A.
  
  Dynamite explodes
- B.
  
  Meat rots if it is not refrigerated
- C.
  
  Gasoline burns
- D.
  
  Ice floats on top of liquid water
- E.
  
  A silver platter tarnishes
5.

All of the following are properties of tin. Which one is a chemical property of tin?
- A.
  
  Tin can be hammered into a thin sheet.
- B.
  
  At –40C a sheet of tin crumbles to a gray powder.
- C.
  
  At –40C a sheet of tin crumbles to a gray powder.
- D.
  
  When a bar of tin is bent, it emits an audible “cry”.
- E.
  
  Tin erodes when added to hydrochloric acid, and a clear gas forms.
6.

A tentative explanation for a set of observations that can be tested by further experimentation is referred to as
- A.
  
  Hypothesis
- B.
  
  A law
- C.
  
  A theory
- D.
  
  None of the above
7.

Choose the response that includes all the items listed below that are pure substances. 1. orange juice 2. steam 3. ocean water 4. oxygen 5. vegetable soup
- A.
  
  1 only
- B.
  
  2 4
- C.
  
  1 3 4
- D.
  
  4 only