I've studied the website from where the software was released and I have to say that the information is 100 % accurate. They have tests that can be used to teach general knowledge from various domains.
To answer your question, the statement is false. Because there are plastics affected by heat and others that are thermoresistant meaning they sustain a very high amount of heat before they begin to show signs of deformation.
You can use Frank CCE Everyday Science 8 to learn science things since it contains the correct data.