What subatomic particle causes atoms to have different isotopes?
Responda
neutron
electron
proton
Questão 3
Questão
How many electrons can the second shell be filled up to?
Responda
2
4
6
8
Questão 4
Questão
Which separation technique allows you to separate a liquid and a dissolved solid, but keep the liquid too?
Responda
chromatography
distillation
evaporation/crystallisation
filtration
Questão 5
Questão
This scientist figured out there was atoms contain a positive nucleus, by firing alpha particles at gold.
Responda
Rutherford
Bohr
Thomson
Einstein
Questão 6
Questão
When going down group 1, the reactivity increases.
Responda
True
False
Questão 7
Questão
Who is most often credited with being the creator of the modern periodic table?
Responda
Newlands
Mendeleev
Questão 8
Questão
Group 7 elements are commonly known as [blank_start]Halogens[blank_end]. They normally exist as [blank_start]pairs[blank_end] of atoms.
They become [blank_start]less[blank_end] reactive down the group – because the [blank_start]outer[blank_end] shell is further from the nucleus so it is [blank_start]harder[blank_end] to gain an electron.
They have higher melting and boiling points [blank_start]down[blank_end] the group.
A more reactive halogen will [blank_start]displace[blank_end] a less reactive halogen.
Responda
Halogens
pairs
less
outer
harder
down
displace
Questão 9
Questão
Tick all the boxes that reference the typical/general properties of metals.
Responda
shiny
dense
ductile
malleable
brittle
dull
sonorous
conductor
insulator
Questão 10
Questão
[blank_start]Simple distillation[blank_end] is a method for separating the [blank_start]solvent[blank_end] from a [blank_start]solution[blank_end], leaving behind the [blank_start]solute[blank_end]. This method works because the solvent has a much lower [blank_start]boiling point[blank_end] than the dissolved solute. Heating the solution allows the solvent to [blank_start]evaporate[blank_end], and then it passes through a condenser, where it is cooled and condensed into a separate container. The [blank_start]solute[blank_end] does not evaporate and so it stays behind.
Responda
Simple distillation
Filtration
Crystallisation/evaporation
Fractional Distillation
Chromatography
solvent
solute
solution
solid
solution
solute
solid
solvent
solute
solvent
solution
solid
boiling point
melting point
crisis point
critical angle
evaporate
condense
freeze
melt
solute
solvent
solid
solution
Questão 11
Questão
Lithium has an electron configuration of 2.1
Sodium has an electron configuration of [blank_start]2.8.1[blank_end]
Carbon has an electron configuration of [blank_start]2.4[blank_end]
Neon has an electron configuration of [blank_start]2.8[blank_end]
Sulfur has an electron configuration of [blank_start]2.8.6[blank_end]
Responda
2.8.1
2.4
2.8
2.8.6
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GCSE - AQA: C1.1 The Fundamental Ideas in Chemistry