1) what occurs during a chemical change ? a) change in shape b) formation of new substances c) change in state d) physical attention only 2) what happens to rusty when it rains ? a) he becomes shiny b) he rusts c) he disappear d) he grows bigger

Papan Peringkat

Gaya visual

Pilihan

Berganti templat

Pulihkan simpan otomatis: ?