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Chemistry C1.1 - 1.4 Flashcards | StudBud
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Chemistry C1.1 - 1.4
Chemistry C1.1 - 1.4
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Limestone, covalent, bonding, ionic, atoms, periodic table #science #ks4science #scienceaqa #c1114
Flashcards
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Questions
20
Answers
1
The periodic table consists of what.......... only?.
metals
non-metals
compounds
elements
2
Calcium atoms have twenty electrons, what is its electronic configuration?
2, 8, 8, 2
2, 8, 8, 8, 2
2, 8, 2, 8
2, 8, 8
3
The bond formed between atoms that are sharing some electrons is called ....what bonding?
covalent
ionic
metallic
non metallic
4
Calcium hydroxide (slaked lime ) is ..........
a salt
an alkali
an acid
neutral
5
Sodium is what? ........
a non-metal
an element
a compound
a molecule
6
The chemical symbol for potassium is what? .....
P
Po
Pt
K
7
What is the name of the gas that is given off when limestone is heated?
carbon oxygen
carbon dioxide
carbonate
carbon oxide
8
The formula of ammonia is NH
3
. What does this tell you about the number of atoms?
1N & 3H
3N & 1H
1N & 1H3
3N & 3H
9
The atomic number of sodium is 11, how many protons does it have?
6
7
22
11
10
Fluorine gains an electron to become a ...... charged
negatively
positively
neutrally
naturally
11
What is the electronic configuration of aluminium (atomic number 13)?
2, 3, 8
2, 8, 1, 2
2, 8, 13
2, 8, 3
12
Sodium ion is written as ......
Na+
Na
Na ion
Na-
13
How many atoms are in a molecule of calcium carbonate CaCO
3
?
5
3
6
4
14
The chemical bonds formed between two ions of opposite charges is called ...... bonding.
covalent
metallic
ionic
shared
15
When sodium (Na) loses an electron, it becomes sodium ...what?
ion
atom
electron
metal
16
Two or more different elements are chemically joined together to form what........?
a mixture
a compound
different atoms
a molecue
17
Farmers and gardeners 'lime' their fields, because the soil is regarded as being .......
too alkaline
too acidic
too soft
too hard
18
How many elements are in a molecule of calcium carbonate (CaCO
3
)?
4
6
5
3
19
The 3 particles in an atom are proton, electron and ..........
Neutron
Neuclus
Newtron
Neucleon
20
The electrons arrangement is chlorine
17
Cl is .....
2, 8, 7
2, 7, 7, 1
2, 7, 8
2, 15
