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Yr 9 Chem Exam revision Flashcards | StudBud
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Yr 9 Chem Exam revision
Yr 9 Chem Exam revision
20 terms
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#radiation #chemicalequations
Flashcards
20 cards
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Questions
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Answers
1
CO is a
mixture
Compound
element
2
a neutralisation reaction produces.....
salt and water
salt and carbon dioxide and water
salt and acid
salt and hydrogen gas
3
What elements and how many atoms of each element are present in H2SO4.
hydrogen x2 sulphur x1 oxygen x4
helium x2 sulphur x4 oxygen x4
helium x2 sulphur x1 oxygen x4
hydrogen x2 sulphur x4 oxygen x4
4
what are the three types of radiation?
beta, alpha, bemma
alpha, beta, gamma
gamma, beta, ion
amma, bemma, gamma
5
A pure substance only found on the periodic table and is only made up of one type of atom is ..
an atom
a compound
an element
a mixture
6
characteristics of acids are.....
turn red litmus paper blue, bitter, corrode, burn
turn blue litmus paper red, sour, burn, corrode
sour tasting
turn blue litmus paper red, bitter, burn, corrode
7
what charges do protons, neutrons and electrons have?
neutral, positive, negative
negative, neutral, positve
positive, neutral, negative
neutral, negative, positive
8
mass number - atomic number =
number of atoms
number of protons
number of neutrons
number of electrons
9
orange juice would be classified as .....
weak acid
a strong acid
neutral
basic
10
on a pH scale red would indicate the substance is a(n)
neutral
acid
base
11
how many electrons can occupy the third shell?
2
8
7
1
12
What type of chemical reaction is this? acid + metal -> salt + hydrogen gas
neutralisation
acid carbonate
acid metal
respiration
13
an acid carbonate reaction produces.....
salt and hydrogen gas
salt and water and carbon dioxide
acid and metal
salt and water
14
pure water would have a pH of.....
1
3
14
7
15
Neon has the atomic number of 10 & a mass number of 20, how many protons, neutrons & electrons?
10,20,10
20,10,20
20,20,20
10,10,10
16
the nucleus is made up of....
electrons and neutrons
protons and neutrons
protons
electrons and protons
17
what scientist was not involved in the atomic theory?
Rutherford
Heisenberg
Newton
Dalton
18
on the pH scale 1-6 would be classified as a......
basic
alkaline
acid
neutral
19
what is the element which has an electron configuration of 2,8,8,1
calcium
neon
sulphur
potassium
20
what is the electron configuration of oxygen?
2,7
2,5,1
2,8
2,6
