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Atomic Structure
Test Description: Atomic Structure
Instructions: Answer all questions to get your test result.
1) Element T has 7 protons. Element Q has 15 protons. Element X has 12 protons. Element Z has 17 protons. According to the periodic table, which of the elements is metal?
A
Element X
B
Element Z
C
Element Q
D
Element T
2) What is the total number of electrons in an atom with an atomic number of 13 and a mass number of 25
A
13
B
12
C
38
D
25
3) Scientist believe that interactions between atoms depend mostly on the arrangement of the valance electrons. This theory is MOST supported by the observation of similar reactions
A
in a group or family of the periodic table
B
with a similar atomic number
C
with a similar atomic mass
D
in a period of the periodic table
4) Which of the following best describes a change in iron caused by a chemical reaction?
A
an iron nail looks shiny and silvery
B
an iron wire attached to a battery becomes hot
C
an iron wire left outside turns a rusty color
D
an iron nail robbed with a magnet attracts iron powder
5) Which of the following lists the properties of metals
A
dull, poor conductors, not malleable
B
shiny luster, poor conductors, malleable
C
shiny luster, good conductors, not malleable
D
shiny luster, good conductors, malleable
6) Na2+H2SO4-> Na2SO4+ H2 Which of the following lists all of the reactants of the equation shown above?
A
Na2O2 and Na2SO4
B
Na2 and H2SO4
C
Na2SO4 and H2
D
H2O4 and Na2SO4
7) How many total atoms are in a molecule of iron oxide, Fe2O3?
A
3 atoms
B
1 atom
C
6 atoms
D
5 atoms
8) How many different elements are in Mg(OH)2?
A
3 elements
B
5 elements
C
4 elements
D
2 elements
9) What is the charge of a neutron and where is it located within an atom?
A
Negative; in the nucleus
B
Neutral; in the nucleus
C
Neutral; in the electron cloud
D
Positive; in the nucleus
10) According to the periodic table, all of the following are nonmetals except---
A
Nitrogen
B
Fluorine
C
Sodium
D
Oxygen
*select an answer for all questions
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