Chalk dust is spread in the path of a laser beam. The dust scatters light in the beam path, showing it moves in a straight line. Mount the laser on the lab stand, with the laser pointing to the side ...

The ephemeral nature of chalk art is what makes it special. Instead of seeing this as a negative, artists can use it as a ...

I thought painting with Chalk Paint was going to be tricky and time-consuming ... Another surprising feature was how little paint was used and how much was left over for future projects. Don’t be ...

Add bicarbonate of soda to bottle A until it is one-third full Add cornflower to bottle A until another third is full - the bottle should now be two-thirds full ...

For this experiment. We're going to use: three soil samplessand, clay and chalk. Weighed to equal amounts, three funnels linedwith filter paper. A beaker; we'll add 100 millilitres of water to ...