1 00:00:00,110 --> 00:00:05,110 Natural Science Unit 5 Materials and Properties 2 00:00:05,110 --> 00:00:24,579 Matter makes up different materials, and materials have different properties. 3 00:00:24,579 --> 00:01:05,409 They can be transparent or opaque, resistant or fragile, rigid or flexible, elastic or non-elastic. 4 00:01:05,409 --> 00:01:29,239 Glass is transparent, we can see through it, and it's fragile. 5 00:01:29,239 --> 00:01:36,239 Plastic can have different colors and shapes. It's light, long-lasting and cheap. 6 00:01:36,239 --> 00:01:44,819 Premium is a very strong metal, but very light. 7 00:01:44,819 --> 00:01:52,049 Rubber is flexible and long-lasting. 8 00:01:52,049 --> 00:01:58,640 Steel is one of the strongest metals. 9 00:01:58,640 --> 00:02:07,060 More information on pages 72 and 73 of your book.