900191
Descrição
Quiz por Jawad Karim, atualizado more than 1 year ago
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Criado por Jawad Karim
aproximadamente 10 anos atrás
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Questão 1
Questão
Whats an element?
Responda
-
A substance made of one atom type.
-
A substance made of several atoms
-
A substance that keeps reactions happening in the body
Questão 2
Questão
Neutrons have a charge of +1
Responda
- True
- False
Questão 3
Questão
Why is argon unreactive?
Responda
-
It is in Group 8
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It has a full outer shell of electrons
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It has the lowest number of outermost shell electrons out of any element in the entire periodic table.
Questão 4
Questão
Dmitri Mendeleev created the better version of the Periodic Table
Responda
- True
- False
Questão 5
Questão
Vertical columns in the P. Table are called groups. Rows in the P.Table are called Periods
Responda
- True
- False
Questão 6
Questão
Pb is the symbol for neon.
Responda
- True
- False
Questão 7
Questão
When drawing atoms, the __________ shell must always be filled first before moving on to the next one.
Responda
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lowest
-
highest
-
biggest
-
smallest
-
furthest from the nucleus
Questão 8
Questão
An atom always wants a full outermost shell
Responda
- True
- False
Questão 9
Questão
Balance this equation:
H2SO4 + NaOH ---->Na2SO4 + H2O
Responda
-
H2SO4 + 2 NaOH ---> NaSO4 +2H2O
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2H2SO4 +3 NaOH ---->Na SO4 + 4 H2O
Questão 10
Questão
Why do equations need to be balanced?
Responda
-
Because atoms can't be created or destroyed in a reaction
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Because #YOLO
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Because they're easier to understand that way and so scientists made that rule compulsory.
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