Science Topic 2 - Matter

Anions

________ are negative ions and tend to be non- metals with their name ending in, ide.

neutron

What is converted into a proton and an electron? Answer with a single words or term.

element

What is a substance that is made by only one atom? Answer with a single words or term.

substances

What are made from atoms? Answer with a single words or term.

Isotopes

________ are mainly written with the element name then the ________ mass number e.g.

compound

What is a substance made from more than one kind of atom? Answer with a single words or term.

Stable Isotopes

What are made up of atoms with balanced forces between nuclear particles (protons and neutrons)

Electrons

What are located in regions called electron shells? Answer with a single words or term.

Alpha radiation

________ is the least penetrating only being able to travel a few centimetres in air and can be stopped by a piece of paper.

Gamma radiation

________ is the most penetrating being able to travel several hundred metres and requires several centimetres of lead or a thick wall of concrete to stop it.

Unstable Isotopes

________ are made up of atoms with unbalanced forces between nuclear particles.

Beta radiation

________ can travel a few metres in the air and can be stopped by a sheet of aluminium foil.

Inner shells

________ begin filling first, they are smaller and can hold fewer electrons.

Gamma decay

________ does not change either the atomic number or the mass number.

Ionic compounds

What are very common e.g? Answer with a single words or term.

lowest energy shell

What is closest to the nucleus? Answer with a single words or term.

element symbol

A(n) ________ is a letter abbreviation used in chemistry.