Put the models in order
The idea: each scientist improved the model because a new experiment didn't fit the old one. Tap each card to see what they did and why it mattered.
swipe sideways on a phone →
Flip the key words
The idea: most marks are lost by mixing up words like mass number and atomic number. Say the meaning out loud, then flip to check.
Build the atom they ask for
The idea: protons decide the element; protons + neutrons = mass number; for a neutral atom electrons = protons. An ion has gained or lost electrons. Shells fill 2, then 8, then 8.
target
drag (or tap) onto the atom
p 0 · n 0 · e 0
Who found what?
The idea: the exam loves "which experiment showed…". Tap a scientist, then tap the discovery that matches.
Light check
The idea: an electron that drops gives out light. A bigger drop = more energy = bluer/violet. A small drop = red. Only fixed drops are possible, so you get lines.
True or busted?
The idea: these are the classic mistakes. Decide, and read why.