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EJHS Chemistry Test 1 2014-2015 Flashcards | StudBud
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EJHS Chemistry Test 1 2014-2015
EJHS Chemistry Test 1 2014-2015
29 terms
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Tests basic knowledge of the Periodic Table of Elements, elements, compounds, atoms, and substances.
Flashcards
29 cards
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Questions
29
Answers
1
What element(s) are in H
2
O?
Hydrogen and Oxygen
Hafnium and Oxygen
Holmium
Hydrogen and Osmium
2
A substance cannot be identified with a
Element Name
Substance Name
Chemical Reaction
Chemical Formula
3
The smallest particle of an element is an
Substance
Element
Atom
Electron
4
Which is
NOT
a sign that a chemical reaction has occurred?
Color change
Temperature change
New odor
Substances dissolve
5
What element(s) are in NaCl?
Sodium and Chlorine
Sodium and Chloride
Nitrogen, Aluminum
Nitrogen and Oxygen
6
What is the Periodic Table organized by?
Atomic Mass
Period
Atomic Number
Group
7
All matter is made up of less than 100 elements because elements can
Combine to make new substances
have chemical reactions
Separate into simpler substances
remain pure to make additional substances
8
During a chemical reaction atoms are
used up
eliminated
rearranged
recycled
9
An atoms Neutrons are
negative
positive
fixed
neutral
10
The columns of the Periodic Table are called
Coordinates
Periods
Elements
Groups
11
What happens to atoms during a chemical reaction?
Atoms rearrange
Atoms expand
Atoms remain the same
Atoms condense
12
What electrical charge does an electron have?
Positive
Neutral
No Charge
Negative
13
The columns of the Periodic Table are called
Periods
Groups
Valence Electrons
Atomic Numbers
14
What Group number contains Noble Gases?
1 and 6
16
18
1 and 8
15
What substances were in the Mystery Mixture?
Sodium Chloride and Ascorbic Acid
Sodium Carbonate and Citric Acid
Sodium Bicarbonate and Citric Acid
Sodium Bicarbonate and Ascorbic Acid
16
All matter is made of
Oxygen
Molecules
Elements
Gas
17
What element(s) are in CO
2
?
Cobalt
Carbon and Oxygen
Cesium and Oxygen
Calcium and Oxygen
18
What element(s) is in O
3
?
Osmium
Oxygen
Oxide
Octane
19
Some safe compounds become poisonous when the elements are
expired
gases
separated
forced together
20
What is a form of matter that is
different
than all other forms of matter?
Atom
Substance
Element
Noble gas
21
What are the rows of the Periodic Table rows called?
Groups
Periods
Coordinates
Element
22
Why were there gaps in Mendeleyev's table?
undiscovered elements
They were Metalloids
They were Lanthanides
they were the Noble
23
Mendeleyev formed the first
Nuclear Bomb
Periodic Table
Manmade Element
Metal
24
Elements can not be broken down into __________ ____________
noble gases
simpler substances
new substances
compounds
25
Protons are
negative
positive
neutral
full
26
A compound is a substance consisting of two or more chemical
Elements
Bonds
Reactions
Electrons
27
An Atomic Number is the number of
Valence Electrons
Protons
Electron shells
Neutrons
28
What elements are in NaHCO
2
?
Sodium, Hydrogen, Carbon, Oxygen
Holmium, Carbon, Nitrogen
Nitrogen, Hydrogen, Carbon, oxygen
Sodium, Cobalt, Hydrogen
29
Noble Gases are "happy" because they have
8 valence electrons
No outer shells
7 electron shells
18 electron shells
