multiple choice 1. At its most basic, science can be defined as: A. the sum of a

Question

multiple choice

1. At its most basic, science can be defined as:

A. the sum of all scientific knowledge              C. an institution in opposition to religion B. the work done by all scientists D. a process of investigation

2. The cosmosphere is a synonym of which one of the following?

A. Solar system                        B. universe                    C. Milky Way galaxy                        D. world

3. Parsimony is the principle involving:          

A. hierarchy     B. simplicity                  C. scientific models                   D. antithesis

4. What do we call the smallest piece of a compound (i.e., the smallest piece that would still be identifiable as the compound)?                  

    A. atom            B. molecule                   C. isotope                     D. ion

5. What do we call the smallest part of an element (i.e., the smallest piece that would still be identifiable as the element)?                    

A. atom            B. molecule                   C. isotope                     D. ion

6. Different forms of atoms of the same name (Examples: sodium, chlorine) can have an overall charge of positive (+) or negative (-). What is the name of the forms of an atom that have an overall charge of either positive or negative?                  

    A. ion               B. nucleus                     C. compound                D. molecule

7. Different atoms of the same name (e.g., carbon) all have the same number of protons in the nucleus, but they can have different numbers of neutrons in the nucleus. What do we call such atoms?

A. compounds     B. molecules     C. ions     D. isotopes

8. Which, if any, of the following reactions give off tremendously huge amounts of energy?

A. fission    B. fusion             C. neither fission nor fusion              D. both fission & fusion

________ 9. What is the total number of atoms in a single molecule of phosphoric acid, which has a chemical formula of H3PO4 ? (Write a number on the blank line.)    Note: H = hydrogen, P = phosphorus, O = oxygen

10. Silicates, the most common minerals in Earth’s crust, have the silicon-oxygen tetrahedron as their most basic repeating molecule. How many atoms total are in one silicon-oxygen tetrahedron molecule?

A. 2                              B. 3                              C. 4                              D.5

Explanation / Answer

Silicates, the most common minerals in Earth’s crust, have the silicon-oxygen tetrahedron as their most basic repeating molecule. How many atoms total are in one silicon-oxygen tetrahedron molecule?- answer 5

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