When solid,liquid and gas are heated,the motion of particles ( )1.speeds up;2.slows down;3.has no changes
问题描述：
When solid,liquid and gas are heated,the motion of particles ( )
1.speeds up;
2.slows down;
3.has no changes
答
1
因为当三态物质受热时,分子会加速运动.这个叫做热分子运动.
答
1
意思是:当固体,液体,气体相互作用激化,分子运动就会加速.