Science-Ch. 6, Part 2 Question Preview (ID: 44404)


Atomic Structure And Chemical Bonds. TEACHERS: click here for quick copy question ID numbers.

How many dots are shown in the electron dot diagram for calcium, element number 20?
a) one
b) two
c) eight
d) twenty

Dot diagrams are used to represent _________________.
a) protons
b) outer electrons
c) atomic mass
d) the structure of the nucleus

All of the following are examples of physical changes except ________________.
a) melting
b) evaporating
c) burning
d) solidifying

The particles that make up an atom are ________________.
a) electrons, protons, and nuclei
b) elements, protons, and electrons
c) protons, neutrons, and nuclei
d) protons, neutrons, and electrons

Density is an example of a __________________.
a) chemical property
b) chemical change
c) physical property
d) physical change

The following are examples of physical properties EXCEPT ________________.
a) density
b) shape
c) color
d) ability to react with oxygen

In an atom, electrons __________________.
a) are located in the nucleus
b) are paired with neutrons
c) travel outside the nucleus
d) are always in the same place in an atom

Aspertame is an artificial sweetener, its formula is C13H16N2O5. Which element in the formula has the largest number of atoms?
a) carbon
b) hydrogen
c) nitrogen
d) oxygen

Which of the following notations represents a molecule?
a) NaCl
b) He
c) H2O
d) Li

Acids and bases can be all of the following except _______________.
a) living
b) useful
c) harmful
d) edible

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