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Science 9 Chemistry Quiz Flashcards | StudBud
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Science 9 Chemistry Quiz
Science 9 Chemistry Quiz
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Atoms, ions and the Periodic table.
Flashcards
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Questions
20
Answers
1
Elements in the same family have the same number of
electrons
protons
electron shells
valence electrons
2
Non-metal elements usually
become positive ions
stay as atoms
become negative ions
react with the noble gases
3
This atom will become an ion by
gaining 5 electrons
losing 3 electrons
gaining 3 electrons
losing all of its electrons
4
The family that contains highly reactive, poisonous gases is
alkali metals
halogens
noble gases
alkaline earth metals
5
In the diagram below, "B" is
electron
nucleus
proton
neutron
6
An element's atomic number is equal to the
number of electron shells
number of neutrons
number of protons
number of valence electrons
7
The first 4 electron shells hold
2, 4, 6, 8 electrons
2, 8, 8,8 electrons
2, 8, 8,18 electrons
a random number of electrons
8
How many valence electrons does the following atom have?
nine
eight
none
seven
9
What is the density of an object that has a mass of 10g and a volume of 2 ml?
5 g/ml
20 g/ml
0.2 ml/g
2 g/ml
10
Atoms have a neutral charge because they
contain only neutrons
don't have an ion charge
have an equal number of protons and electrons
have an equal number of protons and neutrons
11
In the diagram, "E" is
proton
nucleus
electron
neutron
12
Which of the following is NOT a characteristic of metals?
ductile
solid
poor conductors
malleable
13
This family's elements are somewhat reactive and have 2 valence electrons
alkali metals
noble gases
halogens
alkaline earth metals
14
Elements in this family NEVER form ions
noble gases
halogens
alkaline earth metals
alkali metals
15
Salt water would be classified as a
Mixture, homogeneous
Pure substance, element
Pure substance, compound
Mixture, heterogeneous
16
Elements in the same period have the same number of
electrons
electron shells
protons
valence electrons
17
The family that contains elements that all have full shells is
halogens
alkali metals
alkaline earth metals
noble gases
18
The most reactive metals are in the
noble gas family
alkaline earth family
halogen family
alkali family
19
Name the following element.
lithium
sodium
arsenic
magnesium
20
An atom becomes a positive ion when it
gains electrons
loses electrons
loses protons
gains protons