Atoms, elements and compounds

Select all the statements that are true about elements.

• They can be found in the periodic table.

• Each element has a different atomic number.

• Elements contain one type of atom.

• Every element has a symbol which is the capital letter of it's name.

• Elements are grouped according to their properties.

Atoms mostly consist of _____ space.

A column in the periodic table is called a ?

• Period

• Group

• Row

• Tally

Select all the statements about atoms that are true.

• Atoms are mostly positive charge with some negative electrons dotted in it.

• Atoms are made up of sub-atomic particles.

• Atoms have a dense nucleus at the centre made up of protons and electrons.

• Atoms are indivisible units - they cannot be broken apart.

• An atoms nucleus is surrounded by a cloud of electrons.

Tags

NGSS.MS-PS1-1

All elements can be categorized as metals or non-metals.

• True

• False

Chlorine is an example of a non-metal element.

• True

• False

Calcium is an example of a (metal or non-metal) element.

A proton has a relative mass of...

• 1

• 0.0005

• 0

• 3.14

A neutron has a relative mass of...

• 1

• 0.0005

• 0

• 3.14

An electron has a relative mass of...

• 1

• 0.0005

• 0

• 3.14