Newlands 'Table of Octaves' was based on every 8th element having similar properties. Why wasn't his table accepted?

Most of the groups contained elements with very different properties

How, when non-metals react ionically, do they form negative ions?

They gain electrons, becoming negative ions

What does the group number of an element tell you about the element?

The number of electrons in the outer shell

Why are the noble gases unreactive?

They have a full outer shell of electrons

Why was Mendeleev's table accepted by other scientists?

New elements were discovered that had the properties Mendeleev predicted

Why is fluorine the most reactive halogen?

There is a stronger attraction between the nucleus and the outer shell

Potassium is more reactive that lithium because it loses an electron more easily. Why?

The electron in the outer shell is further from the nucleus

How do atoms of metals tend to react, in terms of electrons?

Metals lose electrons to form positive ions

When designing his table, what did Mendeleev do that other scientists hadn't?

He left gaps for elements that hadn't been discovered yet

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GCSE The Periodic Table

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A quiz on the AQA GCSE Chemistry topic The Periodic Table, including questions on the development and structure of the periodic table, trends in group 1 and group 7 elements and the transition metals

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Questions 20

Answers

1
Newlands 'Table of Octaves' was based on every 8^th element having similar properties. Why wasn't his table accepted?
It contained compounds as well as elements
He left out known elements because he didn't have spaces for them
He made up elements to fill in gaps in his table
Most of the groups contained elements with very different properties
2
By what property are the elements in the modern periodic table ordered?
Number of electrons in their outer shell
Atomic weight
Atomic number
Mass number
3
How, when non-metals react ionically, do they form negative ions?
The lose electrons, becoming negative ions
They gain neutrons, becoming negative ions
They gain electrons, becoming negative ions
They lose a proton, becoming negative ions
4
What does the group number of an element tell you about the element?
The number of electrons in each shell
The number of electrons in the outer shell
The number of electrons
The number of shells
5
Which element can be found in period 3 group 5?
Vanadium
Arsenic
Indium
Phosphorus
6
Why are the noble gases unreactive?
They have a full outer shell of electrons
They do react, but too slowly to observe
They have already lost all of their electrons, so can't lose any more
They are all gases and all gases are unreactive
7
Why was Mendeleev's table accepted by other scientists?
New elements were discovered that had the properties Mendeleev predicted
Mendeleev kept telling everyone he was right until people believed him
Mendeleev was a famous scientist, so people believed what he said
Scientists couldn't prove his table was wrong, so they had to accept it
8
What is the name given to group 7 of the periodic table?
The halogens
The noble gases
The alkali metals
The transition metals
9
Why is fluorine the most reactive halogen?
Its outer shell is furthest from the nucleus
It has the most shielding
It is the largest atom in group 7
There is a stronger attraction between the nucleus and the outer shell
10
Which of the following is not a property of the transition metals?
They have high melting and boiling points
The are relatively strong and hard
They are highly reactive
They form positive ions with different charges
11
Potassium is more reactive that lithium because it loses an electron more easily. Why?
The electron in the outer shell is further from the nucleus
There is a stronger attraction between the nucleus and outer shell electron
It has fewer electron shells
It has less shielding
12
When the alkali metals react with water, what products are formed?
metal hydroxide + hydrogen
metal chloride + water
metal oxide + hydrogen
metal hydroxide + carbon dioxide
13
When scientists began to organise the elements into a table, what were they arranged in order of?
Atomic number
Reactivity
Proton number
Atomic weight
14
Which of the following halogen displacement reactions will take place?
I2 + 2 NaCl → 2 NaI + Cl2
Br2 + 2 NaCl → 2 NaBr + Cl2
Cl2 + 2 NaF → 2 NaCl + F2
Cl2 + 2 NaI → 2 NaCl + I2
15
Which group of elements is completely missing from Mendeleev's periodic table?
The Alkali Metals
The Transition Metals
The Noble Gases
The Halogens
16
What is the trend in reactivity as you go down group 7?
The reactivity increases
The group 7 elements are unreactive
There is no pattern in the reactivity of the group 7 elements
The reactivity decreases
17
What is the trend in reactivity as you go down group 1?
The elements get more reactive
The group 1 elements are unreactive
The elements get less reactive
There is no pattern in reactivity of the group 1 elements
18
Which alkali metal reacts with water by floating around on the surface, fizzing and burning with a lilac flame?
Sodium
Potassium
Rubidium
Lithium
19
How do atoms of metals tend to react, in terms of electrons?
Metals gain electrons to form negative ions
Metals share electrons with other atoms
Metals lose electrons to form positive ions
Metals lose electrons to form negative ions
20
When designing his table, what did Mendeleev do that other scientists hadn't?
He arranged the elements in a periodic pattern
He put the elements in groups that had similar properties
He left gaps for elements that hadn't been discovered yet
He put the elements in order of increasing atomic weight

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