Additional Science Chemistry C4 Revision Summary - OCR 21st Century

What does the nucleus of an atom contain?

What is the relative mass and charge of a neutron?

Write the state symbols for each physical state

Describe how heating a metal can help identify it

Why does each element produce a different line spectrum?

What can line spectrums be used for?

What size did Dobereiner organise the elements into? What were these groups called?

Give two reasons why Newlands' Octaves were criticised

Why did Mendeleev leave gaps in his Table of Elements?

What feature of atoms determines the order of the periodic table?

What is significant about the properties of elements in the same group?

What are the rows in the periodic table known as?

How many electrons can the first shell of any atom hold?

What is Ionic Bonding?

What kind of structures do ionic compounds form?

Which group are the alkali metals?

As you go down the group of alkali metals, do they become more or less reactive?