1) what’s an example of a scale? 2) What do we normally call source when we do an assessment at school?

1. scale means to climb up something or to remove in thin layer. an example of scale is rock climbing.

2.huhu

1. Scale is a ratio of map to the actual size of the body or a place. Eg. 1:10000 (here it means that what is 10,000 units of distance in real is 1 unit on map)

2. Formative assessment

because the two particles have an equal charge, the charges will cancel out and give the atom an overall charge of 0. so, if at atom has 35 protons in the nucleus, we could expect it to have 35 electrons orbiting that nucleus.