Experimental materials: two slices of bread, water, a paper bag Experimental methods: (1) Take 1 slice of bread, tear (slice) in two, one on the dry environment, a sprinkle of water on top (2) and
Purpose: to see what will happen if oil drops on water Equipment: a glass bottle, water, a spoonful of water, a chopstick Steps: 1 tfill the glass bottle with half a bottleful of water 2 drop a spo