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