Science End of Year Test

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What is the name of group 1 on a periodic table?
Alkali Metals
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What is the name of group 7 on a periodic table?
Halogens
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What are all substances made up of?
Atoms
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What is the necleus of an atom made up of?
Protons and Neutrons
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What is the relative charge of a proton?
+1
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What is the relative cahrge of a neutron?
0
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What is the relative charge of an elctron?
-1
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In an atomthe number of electrons is equal to what?
The number of protons.
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What is an isotope?
An atom that has a different number of neutrons but the same number of protons and electrons.
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Who invented the plumb pudding?
Thomson
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in Rutherfords nuclear model are the elctrons negative or positive?
Positive
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Why are noble gases unreactive?
Because the have stable arrangements of electrons.
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Wht is the odd one out in group 0? and why?
Helium because all of the other noble gases have 8 electrons in their outermost shell whereas helium has 2.
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What are compounds?
Something that is composed of two or more single elements.
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Whatis made when you add sodium and water?
sodium hydroxide + hydrogen
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actual size=
image sze over magnification
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What does the Nucleus do?
Controls the activities of the cell
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What does the cytoplasm do?
it is where mst of the chemical reactions happen.
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What does the cell membrane do?
Controls the passage of substances going in and out of the cell.
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What does the Mitochondria do ?
it is where most of te energy is released in respiration.
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What is the cell wall made of?
cellulose
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What type of prokaryote is a bacteria cell?
single -celled
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Other cards in this set

Card 2

Front

What is the name of group 7 on a periodic table?

Back

Halogens

Card 3

Front

What are all substances made up of?

Back

Preview of the front of card 3

Card 4

Front

What is the necleus of an atom made up of?

Back

Preview of the front of card 4

Card 5

Front

What is the relative charge of a proton?

Back

Preview of the front of card 5
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