Scientist Nina and her young experimenters discover the amazing ways that things can change and react in the everyday world.

Nina investigates why you have to wait for paintings to dry, with the help of Felix, her touch neuron. Experimenters Katie, Lucy and Tia visit Nina in her lab and use their senses to work out that paint needs to be mixed with water. They also notice that felt-tip pens feel a tiny bit wet but their colour dries really quickly on paper.

Nina does an experiment to show that all paint starts out as a dry powder and needs to be mixed with liquids like water to help it get onto paper. Then they go and do a huge colouring-in challenge and discover that paint is much better for colouring in big areas than felt-tip pens.

Finally, back in the lab, they do an experiment to see if there is a way of making paint dry faster, using the special quick-drying chemical that is in felt tips. Show less