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Some elements are named after countries.

Atoms and Elements 4

This Science quiz is called 'Atoms and Elements 4' and it has been written by teachers to help you if you are studying the subject at middle school. Playing educational quizzes is a fabulous way to learn if you are in the 6th, 7th or 8th grade - aged 11 to 14.

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A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic number, which is the number of protons in its nucleus. In Science, the periodic table contains about 118 elements so far, but this may very well increase if we discover more elements.

1 .

The elements in group 7 of the periodic table are .......

conductors

gases

metals

non-metals

Group 7 is called the halogens

2 .

The following elements are named after countries except .......

Fr Francium - France, Po Polonium - Poland, Ge Germanium - Germany. There are several more!!

3 .

The name of the element with the symbol Na is .......

napthalene

neon

nickel

sodium

4 .

Lithium floats on water as it .......

is a non-metallic element

is a solid

is less dense than water

is more dense than water

Lithium is a metal in group 1

5 .

Li, Na, K and Cs are group 1 elements. The most reactive is .......

The elements in group 1 increase in reactivity as you go down the group

6 .

Which of the following is a halogen?

Argon

Fluorine

Helium

Neon

The halogens are in group 7

7 .

A pure substance in which all of the atoms are identical is a description of .......

a compound

a mixture

an alloy

an element

8 .

In the periodic table, the elements are arranged in order of increasing .......

alphabetical symbol

electron number

mass number

proton number

9 .

The name of a gas used in weather balloons is .......

chlorine

hydrogen

neon

nitrogen

Both hydrogen and helium are less dense than air. Helium is used in airships as it is unreactive and so safer than hydrogen (check out the Hindenburg disaster). Hydrogen, however, is still used in weather balloons as it is cheaper than helium.

10 .

The following elements are named after famous scientists except .......

curium

einsteinium

nobelium

uranium

Uranium was named after the planet Uranus

Author: Sue Davison