A SUBSTANCE IS A SINGLE KIND OF MATTER THAT IS PURE-MEANING IT ALWAYS HAS A SPECIFIC COMPOSITION AND SET OF PROPERTIES. AN EXAMPLE IS TABLE SALT-NO MATTER WHERE IT COMES FROM, IT HAS THE SAME...
Ok People help me out on this please about a childrens book. It was either set in war time or post war and it was about two rival gangs who would have mock wars and use things such as sticky bombs...