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UKA grade 8 Science
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Is helium a noble gas?
Yes, it is
Is oxygen a noble gas?
No, it isn't. It is in group 6 not group 0
Name the 2 elements that are liquids in the periodic table
Bromine and Mercury
Name 2 gases at room temperature
Answers vary eg. oxygen, hydrogen, helium, neon
Name 3 metals
answers vary, eg. gold, silver, magnesium, iron
Are metals good conductors of electricity?
Yes, they are
Are metals good conductors of heat?
Yes, they are
Do non - metals have high or low melitng points?
Low
Do metals have high or low melitng points?
High
What did Dimitri Mendeleev invent?
The periodic table
Are the noble gases reactive?
No, they aren't
What are the group 0 elements usually called?
Noble gases
true or false - group 1 elements react vigorously to water?
True
Going down group 7 elements, do the melting points increase or decrease?
Increase
Going down group 7 elements, do the boiling points increase or decrease?
Increase
What are the vertical columns called in the periodic table?
Groups
What are the horizontal rows called in the periodic table?
Periods
Are non -metal oxides basic or acidic?
Acidic
Are metal oxides basic or acidic?
Basic (They dissolve in water to make an alkaline solution)
What are 3 properties of non - metals?
Poor conductors, In solid state, Dull and Brittle, Low melting points
What are 3 properties of metals?
High melting points, Good conductors, Shiny, High density
What state are the red squares in this periodic table?
Liquid
What state are the blue squares in this periodic table?
Solid
What state are the orange squares in this periodic table?
Gases