Minecraft wiki entry for Development_versions, associated text: Waxing the block emits yellow particles.
Axes can now be used to scrape off wax and oxidation (one stage at a time).
Scraping off the wax from the block emits white particles.
Lightning can now clean oxidation, reverting the oxidation process by one or several stages.
Chances of cleaning and number of reverted stages are higher the closer to the struck block.
The Copper Block variant names are now changed to match Java Edition.
Renamed Copper Block to Block of Copper.
Removed the word "Block" from oxidized variants of Block of Copper, including waxed variants.
The IDs have also been updated.
Copper Blocks ID are no longer stored into block states and now split between waxed and oxidization stages.
Is now affected by the randomTickSpeed gamerule.