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Duplicate of Year 9 chemistry Flashcards | StudBud
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Duplicate of Year 9 chemistry
Duplicate of Year 9 chemistry
60 terms
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#Science
Flashcards
60 cards
F
Practice quiz
P
Host live
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Questions
60
Answers
1
What happens to red litmus paper when exposed to a base?
stays blue
turns black
turns red
turns purple
2
How many
Protons
does this element have?
82
207
125
115
3
A solution with a pH of 13 is
a weak base
a strong base
a strong acid
a weak acid
4
How many electrons does this element have?
6
7
4
8
5
Sulfuric Acid has the formula H2SO4. What does this formula tell us?
2 Hydrogen, 4 sulfur and 4 oxygen
2 hydrogen, 1 sulfur, and 4 oxygen
6 hydrogen, sulfur and oxygen atoms
2 sulfur and hydrogen, 4 oxygen
6
How many valence electrons do elements in Group 4 have?
1
5
2
4
7
If I had twenty water molecules (H2O) how many oxygen atoms would I have?
20
30
15
10
8
The alkali earth metals are Group ____ on the periodic table.
group 3
group 5
group 1
group 2
9
Name the Part of the atom in the box
Nucleus
Neutron
Electron
Proton
10
In the reaction 2NaNO3 → 2NaNO2 + O2, what is a reactant?
Na
NaNO2
O2
NaNO3
11
Oxygen has an atomic number 8. What would the electron configuration of Oxygen be?
2,5
6,2
2,6
2,1,5
12
How many electrons does this element have?
82
125
115
207
13
Name this element
Gold
Platinum
Silver
Copper
14
Often the chemical symbol for an element comes directly from its name. What does Ca represent?
Lithium
Cobalt
Potassium
Calcium
15
Sodium ions have a +1 charge. What is the charge on the carbonate in Na2CO3
+2
-2
+1
-1
16
Name the Part of the atom in the box
Proton
Electron
Nucleus
Neutron
17
In electron configuration, for the second shell to be full there needs to be _______ electrons.
7
2
8
5
18
All matter is composed of indivisible particles called _____________.
molecules
compounds
elements
atoms
19
Elements in Group 6 will create an ion with a charge of __.
+2
+3
-3
-2
20
How many electrons does a neutral Aluminium have in its outermost orbital?
26
4
3
13
21
What does the period number tell us about an atom?
the number of valence electrons
how many subatomic particles are in the nucleus
the number of protons
the number of electron shells
22
What pH is a neutral substance, for example water?
9
11
7
5
23
Name this element
Platinum
Praseodymium
Polonium
Polkadotium
24
If an atom has a negative charge it is called...
An onion
a felion
A cation
An anion
25
A list of the known elements from lightest to heaviest is represented by the
elemental report
periodic table
table periodica
Einsteins table
26
Referring to the image, how many neutrons does this element have?
24
6
18
12
27
What does the group number tell us about an element?
how many neutrons
the number of valence electrons
the size of the element
the number of electron shells
28
In the reaction 2NaBr + Cl2 → 2NaCl + Br2, which is a product?
Br2
Cl2
NaBr
NaCl
29
What is the definition of an ELEMENT in chemistry?
Molecules such as CO2 and H2O
Earth, fire, water
Substances that are made up of just one type of atom
Substances that are made up of different types of atoms
30
If an atom has a positive charge it is called...
An isotope
A cation
An onion
a felion
31
How many
Electrons
will Boron have in its outermost orbital?
4
5
3
6
32
Center of the atom is called
DNA
neutron
nucleus
proton
33
Two or more elements chemically joined together is called a/an
molecule
atom
compound
element
34
Which of these is the Law of Conservation of Mass?
Compounds always have the same proportion of elements
Every action has an equal and opposite reaction
Matter is not created or destroyed in chemical reactions
Energy is not created or destroyed in chemical reactions
35
Chlorine, Hydrogen and Oxygen are examples of ____________ molecules.
cations
anions
diatomic
anatomic
36
What type of elements are the majority of elements on the periodic table?
metals
metalloids
non-metals
acids
37
What is the lightest element on the periodic table?
Hydrogen
Argon
Sodium
Helium
38
If an atom has more or less neutrons than usual is called...
An anion
A cation
An onion
an isotope
39
Name this element
Gold
Platinum
Silver
Copper
40
A sodium atom has 11 electrons. How many electrons would be in its second electron shell?
7
1
2
3
41
Which of the following is not a form of nuclear ratiation
delta radiation
gamma radiation
beta radiation
alpha radiation
42
What does the formula MnO2 tell us
1 Manganese, 2 Oxygen
1 Magnesium, 1 Oxygen
2 mangaoxygens
2 Manganese, 2 Oxygen
43
Atoms are made up of three subatomic particles. These are
teeny bits, weeny bits and electrons
proteins, nuclei and electrons
protons, neutrons and electrons
Protons, neutrons and electrolytes
44
Which group on the periodic table is known as the "noble gases'?
Group 7
Group 2
Group 8
Group 6
45
How many
Electrons
will Boron have?
4
7
5
6
46
Name the Part of the atom in the box
Neutron
Proton
Nucleus
Electron
47
When metals become ions, are they cations or anions?
anion
cation
48
What is the electron configuration of Calcium, it has the atomic number 20.
2,8,8,2
2,8,7,3
2,8,8,3
2,8,9,2
49
Ions can be formed when an atom . . .
loses electrons
gains neutrons
loses neutrons
gains electrons
50
How many electrons does a neutral Aluminium have?
14
11
12
13
51
If an atom has a charge it is called...
An onion
An isotope
An ion
A cation
52
Something that changes red litmus blue and leaves blue litmus unchanged would be
A salt
Acidic
Neutral
Basic
53
How many
neutrons
will Boron have?
7
6
5
4
54
Name this element
Copper
Silver
Platinum
Gold
55
Which metal is liquid at room temperature?
Manganese
Mercury
Molybdenum
Magnesium
56
Sodium Chloride (NaCl) is more commonly known as
sugar
pepper
table salt
cinnamon
57
What is the charge of the ion of this element?
+3
-3
-2
+2
58
From left to right, which numbers should go in the boxes to correctly balance this equation?
2,8,6,8
1,3,3,2
1, 4, 3, 4
1,2,3,2
59
What number should fill in the box to balance the following equation?
3
0
1
2
60
From left to right, which numbers should go in the boxes to correctly balance this equation?
2,2
4,4
1,2
2,1
