9329804
Questão 1
Questão
Who came up with an idea in 460-370 BC that atoms existed , couldn't split or destroy them?
Responda
-
Dalton
-
Democritus
-
Thomson
-
Rutherford
Questão 2
Questão
Who came up with an idea in 1800's that atoms are hard spheres with differing properties?
Responda
-
Dalton
-
Thomson
-
Rutherford
-
Democritus
Questão 3
Questão
Who discovered electrons in 1897 and came up with the Plum Pudding model?
Responda
-
Rutherford
-
Thomson
-
Democritus
-
Dalton
Questão 4
Questão
Who had a gold foil experiment in 1911 that made the plum pudding model wrong , and came up with an idea that most of an atom is an empty space?
Responda
-
Rutherford
-
Democritus
-
Dalton
-
Thomson
Questão 5
Questão
What did Bohr-Rutherford came up with in 1912?
Responda
-
He came up with an idea that electrons are in energy shells and they orbit around the nucleus
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He came up with an idea that nucleus are full of dejunctional energy
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He came up with an idea that atoms are small hard spheres
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He came up with an idea that people just dream so big but end up in a street.
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He came up with an idea that the atom particles consists of further smaller parts.
Questão 6
Questão
Electrons always [blank_start]equal[blank_end] the number of protons
Responda
-
equal
Questão 7
Questão
Protons have a charge of [blank_start]+ve[blank_end] and a mass of [blank_start]1[blank_end]
Responda
-
+ve
-
1
Questão 8
Questão
Electrons have a charge of [blank_start]-ve[blank_end] and a mass of [blank_start]1/1836[blank_end]
Responda
-
-ve
-
1/1836
Questão 9
Questão
Neutrons have a charge of [blank_start]0[blank_end] and a mass of [blank_start]1[blank_end]
Responda
-
0
-
1
Questão 10
Questão
Atomic mass and mass number the same thing?
Responda
- True
- False
Questão 11
Questão
Mass number // Atomic mass : It is the number of [blank_start]protons[blank_end] and [blank_start]electrons[blank_end] in an atom . *Put it in plural form and make the answer with a letter P starting on it first.*
Responda
-
protons
-
electrons
Questão 12
Responda
-
Atomic number
-
Mass number
Questão 13
Responda
-
11
-
23
-
11
-
11
-
12
Questão 14
Questão
Isotopes are the different atoms of the same element containing the [blank_start]same[blank_end] number of [blank_start]protons[blank_end] but different amount of [blank_start]neutrons[blank_end].
Responda
-
same
-
protons
-
neutrons
Questão 15
Questão
Isotopes , fill in how many protons and neutrons in each isotope . Ignore the electrons .
Image:
Mobile upload (image/jpeg)
Responda
-
6
-
6
-
6
-
6
-
7
-
8
Questão 16
Questão
[blank_start]Omitri[blank_end] [blank_start]Mandelev[blank_end] created the periodic table in [blank_start]1869[blank_end] , he arranged it in order of [blank_start]increasing[blank_end] atomic mass.
Responda
-
Omitri
-
Mandelev
-
1869
-
increasing
Questão 17
Questão
Electron configuration. The first energy shell can hold a maximum of [blank_start]2[blank_end] electrons , the second and so on can hold a maximum of [blank_start]8[blank_end] electrons.
Responda
-
2
-
8
Questão 18
Questão
The electric configuration for sodium is 2.[blank_start]8[blank_end].[blank_start]1[blank_end].
Responda
-
8
-
1
Questão 19
Questão
An Ion is an [blank_start]electrically[blank_end] charged particle
Responda
-
electrically
Questão 20
Questão
Ionic bonding=[blank_start]Transfer[blank_end] of [blank_start]electrons[blank_end].
Responda
-
Transfer
-
electrons
Questão 21
Questão
One way of atoms of different elements forming chemical bonds to make a new compound is by IONIC BONDING
Responda
- True
- False
Questão 22
Questão
The element that loses its electron will become [blank_start]positive[blank_end] and the element that gains the electron will become [blank_start]negative.[blank_end]
Responda
-
positive
-
negative.
Questão 23
Responda
-
cation
-
anion
Questão 24
Responda
- True
- False
Questão 25
Responda
- True
- False
Questão 26
Responda
-
calcium sulfide
Questão 27
Questão
In potassium sulfate , there's potassium , sulphur , and [blank_start]oxygen[blank_end] .
Responda
-
oxygen
Questão 28
Questão
Depending on the group number , you can find out the valency number.
Responda
- True
- False
Questão 29
Questão
From group number 1-8 , list the valencies from the 1st group number to the last.
Responda
-
1 , 2 , 3 , 4 ,3 , 2 , 1 ,0
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2 , 6 , 8 ,10 , 12 ,14 ,16 , 18
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3 , 2 , 4 ,1 , 5 , 6 ,7 ,8
Questão 30
Questão
The diatomic elements are B[blank_start]romine[blank_end] , I[blank_start]odine[blank_end] , n[blank_start]itrogen[blank_end] , chlorine , oxygen , and fluorine .
Responda
-
romine
-
odine
-
itrogen
Questão 31
Questão
Transition metals valency is always [blank_start]2[blank_end] unless told otherwise by Roman numerals.
Responda
-
2
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