519951
Frage 1
Frage
Newlands table was disregarded by other scientist because after Calcium the properties did not match very well?
Antworten
- True
- False
Frage 2
Frage
Mendeleev's table is what the modern Periodic Table is based on?
Antworten
- True
- False
Frage 3
Frage
When did scientists discover Protons and Electrons?
Antworten
-
Beginning of the 18th Century
-
End of the 18th Century
-
Beginning of the 19th Century
-
End of the 19th Century
-
Beginning of the 20th Century
-
End of the 20th Century
Frage 4
Frage
Which group is unreactive?
Antworten
-
1
-
2
-
3
-
4
-
5
-
6
-
7
-
0
Frage 5
Frage
When you go down the groups of elements what happens to the level of attraction?
Antworten
-
It gets stronger
-
It stays the same
-
it gets weaker
Frage 6
Frage
What are Group 1 Elements called?
Antworten
-
Alkali Metals
-
Alkene Metals
Frage 7
Frage
What bonds do Alkali Metals form?
Antworten
-
Ionic
-
Covalent
-
Giant Covalent
Frage 8
Frage
Transition metals are found between groups 2&3?
Antworten
- True
- False
Frage 9
Frage
Select the correct statements about transition metals:
Antworten
-
They all have higher melting and boiling points than the alkali metals
-
They all have higher melting and boiling points than the alkali metals, except for Mecury
-
They all have higher melting and boiling points than the alkali metals, except for Chronium
-
They conduct heat and electricity well
-
They don't conduct heat and electricity at all
-
Most are used as alloys
-
They react slowly or not at all
-
They don't react
-
They form positive ions
-
They form negative ions
Frage 10
Frage
Group 7 are know as Halogens?
Antworten
- True
- False
Frage 11
Frage
Halogens are non-metallic
Antworten
- True
- False
Frage 12
Frage
Halogens have :
Antworten
-
Low boiling point and a high melting point
-
Low boiling point and a low melting point
-
High boiling point and a high melting point
-
High boiling point and a low melting point
Frage 13
Frage
A more reactive halogen will displace a less reactive one?
Antworten
- True
- False
Frage 14
Frage
Hard water:
Antworten
-
Creates scum
-
Creates lather
-
Contains Magnesium and Calcium ions
Frage 15
Frage
The benefits of Hard Water are:
Antworten
-
The calcium is good for our bones and teeth
-
Reduces the risk of heart disease
-
Increases chance of cancer
-
Costs more
Frage 16
Frage
How do we remove Hard Water?
Antworten
-
Ion Exchange column
-
Add washing soda
-
Boiling it
-
Freezing it
-
Compressing it
Frage 17
Frage
A modern water filter uses Carbon as its main material?
Antworten
- True
- False
Frage 18
Frage
Using Washing Soda to soften water means that your precipitate out all calcium and magnesium ions along with any other insoluble carbonates.
Antworten
- True
- False
Frage 19
Frage
Exothermic means
Antworten
-
Loses energy
-
Gains energy
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