MEDIUM
Upper Secondary-IGCSE
IMPORTANT
Earn 100

Use the data given for the substances listed below to answer the question that follows on its physical state at its room temperature of 25 0C and atmospheric pressure.

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A sample of ethanoic acid was found to boil at 121 0C at atmospheric pressure. Use the information in the table to comment on this result.

Important Questions on The Nature of Matter

MEDIUM
Upper Secondary-IGCSE
IMPORTANT

Choose from the words below to fill in the gaps in the passage. Words may be used once, more than once, or not at all.

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Atoms are made up of three different particles _____ which are positively charged; _____ which have no charge; and _____  which are negatively charged.

The negatively charged particles are arranged in different _____ (shells) around the _____ of the atom. The particles with a negligible mass are the _____. Atoms of the same element with different numbers of _____ are known as _____.

EASY
Upper Secondary-IGCSE
IMPORTANT

This part of the exercise is concerned with electron arrangements and the structure of the Periodic Table. Complete these sentences by filling in the blanks with words or numbers.

The first shell fills up first from _____ to helium.

EASY
Upper Secondary-IGCSE
IMPORTANT

This part of the exercise is concerned with electron arrangements and the structure of the Periodic Table. Complete these sentences by filling in the blanks with words or numbers.

The second shell fills next from lithium to _____.

EASY
Upper Secondary-IGCSE
IMPORTANT

This part of the exercise is concerned with electron arrangements and the structure of the Periodic Table. Complete these sentences by filling in the blanks with words or numbers.

Eight _____ go into the third shell from sodium to argon.

EASY
Upper Secondary-IGCSE
IMPORTANT

This part of the exercise is concerned with electron arrangements and the structure of the Periodic Table. Complete these sentences by filling in the blanks with words or numbers.

The fourth shell start to fill from potassium to _____.