Reactivity Flashcards
What groups do the metals become more reactive in as you go down it? Why?
Group 1, Alkali metals. This is because the valence electrons are further from the nucleus and loosely held
What happens when an alkali metal reacts with water?
The metal reacts with water to form a hydroxide of the metal (strong base) and bubbles of Hydrogen gas.
What happens when an alkali metal reacts with halogens?
Halogens are good oxidising agents, meaning that they cause one electron to be lost from the valence shell from another atom. Since they only lack 1 electron to be stable they will try and remove an electron from the metallic atoms.
What are halides?
Halides are halogen with a negative charge. Eg, x-
What happens when halogens react with halides?
Halogens want electrons from other soluble salts (halides) so when it dissolves it forms both of it ions in the solution.
What is the strongest oxidising agent?
Fluorine
Explain in words what would the products be in a reaction involving Cl2 and Br-.
The Cl2 will want to remove an electron from the negatively charged Br- because it only needs one more electron to stabilise itself. Therefore, Cl2 will become Cl- and Br- will become Br2.
What do metals tend to do in terms of electrons?
Lose them.
What do non-metals do in terms of electrons?
Gain them.
What solutions do metallic oxides form?
Basic solutions
What solutions do non-metallic oxides form?
Acidic solutions
What are the groups of elements that are semi-conductive and form amphoteric oxides?
Metalloids
What is an amphoteric oxide/hydroxide?
An amphoteric oxide/hydroxide behaves as an acid or base depending on the reaction it is involved in.
What is amphoteric also called?
Amphiprotic
What is an amphoteric oxide?
Aluminium oxide
