Question

these words imply a chemical change these words do not... corrode explode mix vaporize freeze rot rust melt ferment crumple boil condense crush photosynthesis burn (combust) grind tarnish

Explanation:

Step1: Identify Chemical Change Indicators

Chemical changes involve new substances forming (reactions). Words like Corrode (metal reaction), Explode (chemical reaction), Ferment (biochemical reaction), Rot (decomposition), Rust (oxidation), Photosynthesis (biochemical), Burn (combustion), Tarnish (metal reaction) imply chemical changes.

Step2: Identify Physical Change Indicators

Physical changes don't form new substances (state/shape change). Words like Mix (no new substance), Vaporize (state), Freeze (state), Melt (state), Crumble (shape), Boil (state), Condense (state), Crush (shape), Grind (shape) imply physical changes.

Answer:

• These words imply a chemical change: Corrode, Explode, Ferment, Rot, Rust, Photosynthesis, Burn (combust), Tarnish
• These words do NOT imply a chemical change: Mix, Vaporize, Freeze, Melt, Crumble, Boil, Condense, Crush, Grind