Question : 1.Which the summary of a large amount of scientific information? A) : 1318353

1.Which is the summary of a large amount of scientific information?

A) hypothesis

B) theory

C) scientific law

D) technology

E) scientific method

2.What method used by scientists is the systematic approach to the discovery of new information?

A) analytical method

B) hypothetical method

C) chemical method

D) technological method

E) scientific method

3.What is a hypothesis?

A) a fact that results from extensive experimentation and testing

B) the summary of a large amount of information

C) the result of a single measurement or observation

D) an attempt to explain an observation in a common sense way

E) an observation of a chemical reaction

4.Which statement concerning the scientific method is FALSE?

A) the scientific method is an organized approach to solving scientific problems

B) the process of explaining observed behavior begins with a hypothesis

C) experimentation is conducted to either support or disprove a hypothesis

D) a hypothesis becomes a theory when a single experiment supports it

E) a theory explains scientific facts and can help predict new facts

5.What type of change alters the appearance, but not the composition or identity of the substance undergoing the change?

A) theoretical

B) physical

C) analytical

D) chemical

E) nuclear

6.Which statement concerning changes in matter is FALSE?

A) a physical change alters the appearance of a substance, but not its identity

B) a chemical change alters the identity of a substance

C) a chemical change always results in the production of a new substance

D) a chemical change is also called a chemical reaction

E) melting and freezing are chemical changes that change both the appearance of the substance as well as the identity of the substance

7.Which process depicts a physical change?

A)

B)

C)

D)

E)  None of the processes above depicts a physical change.

8.What statement best describes an intensive property?

A) a property of a substance that does not depend on the quantity of the substance present

B) a property of a substance that depends on the quantity of the substance present

C) a property of a substance that depends on the mass of the substance, but not the volume of the substance

D) a property of a substance that depends on the physical state (solid, liquid, or gas) of the substance

E) a property of a substance that changes based on the mass of the material that is present

9.Which statement concerning the classification of matter is FALSE?

A) all matter is either pure substance or a compound

B) an element is a pure substance that cannot be changed into a simpler form of matter by any chemical reaction

C) a compound is a pure substance made up of two or more different elements combined in a definite, reproducible way

D) a pure substance is composed of only one type of component

E) a mixture is the physical combination of two or more pure substances in which each substance retains its own identity

10.When hydrogen (H2) and chlorine (Cl2) gases are mixed, hydrogen chloride (HCl) is produced.  Hydrogen chloride is classified as what type of matter?

A) an element

B) a compound

C) a homogeneous mixture

D) a heterogeneous mixture

E) a solution

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