C1: Atomic structure homework quiz

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Which term/s describes a mixture ? *

1 point

Two or more substances in a container together

Two or more substances chemically joined together

Two or more atoms in a container

Two of the same atoms chemically bonded together

Which statement is true of electrons? *

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They have a positive charge

They have a reactive mass of one

They have a negative charge

They have a relative mass of two

Which statement is true of protons? *

1 point

They are found in the nucleus

They have a negative charge

They have a relative mass of two

They have a reactive mass of 1/1800

The mass number of an element is not a whole number because..... *

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It is an average of the mass numbers of the different isotopes

Mass numbers change frequently

The number of electrons can change

It is an average of the atomic numbers

What is the correct electron configuration for sodium? *

1 point

2,8,1,

2,8,8,1

2,8,8

2.1

Video link option 1

Which electronic structure is correct? *

1 point

oxygen atom (atomic number eight and mass number sixteen): 2,8,6

aluminium atom (atomic number thirteen and mass number twenty seven): 2,8,3

carbon atom (atomic number six and mass number twelve): 2,8,2

sodium atom (atomic number eleven and mass number twenty three): 2,9

Which statement is false about an atoms atomic number? *

1 point

It is equal to the number of protons

It is equal to the number of electrons

It is always equal to the number of neutrons

It increases by one by each subsequent element in the periodic table

Video link option 2

Isotopes are.... *

1 point

Atoms of the same element, with different numbers of electrons

Atoms of the same element, with different numbers of protons

Atoms of the same element, with different numbers of protons and electrons

Atoms of the same element, with different numbers of neutrons

Email *

Which term/s can be used to describe H2O? *

1 point

An atom and a compound

A compound and a molecule

A molecule and an element

An atom and a molecule

Which equation is correctly balanced? *

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2C6H12O6 ----> 2C2H5OH + CO2

2Li + 2H2O ---> LiOH + 2H2

4Fe + 2H2O ----> 2Fe2O3

2H2O2 ---> 2H2O + 2O2

What would be the best method to separate sand from sodium chloride solution? *

1 point

Simple distillation

Crystallisation

Evaporation

Filtration

Which sentence describes where electrons are found in an atom? *

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Electrons are found in the nucleus, on the outside of the atom

Electrons are found in shells, around the nucleus

Electrons are found, in the space between the nucleus and the shells

Electrons are found, in the nucleus at the centre of the atom

What is the stationary phase? *

1 point

The solvent that moves through the paper

The pigments that are carried by the solvent

The paper used in the process of chromatography

The paper and the pigment in a chromatography process

What is the correct number of protons, electron and neutrons for an atom of lithium (atomic number three, mass number seven)? *

1 point

3 Protons, 4 Electrons and 4 Neutrons

3 Protons, 4 Electrons and 3 Neutrons

4 Protons, 3 Electrons and 3 Neutrons

3 Protons, 3 Electrons and 4 Neutrons

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