eT IS1 T2: Solids, Liquids, Gases

Which state of matter has a definite shape and definite volume?

• Liquid 液體
• Solid 固體
• Gas 氣體
• Plasma 等離子體

What do particles in a solid primarily do?

• Vibrate in place 在原地振動
• Move freely 自由移動
• Slide past each other 互相滑動
• Spread far apart 分散開來

What explains the crunch sound of snow under your feet?

• Snow evaporating quickly 雪快速蒸發
• Air pockets collapsing due to pressure 空氣囊因壓力而塌陷
• Particles vibrating loudly 粒子劇烈振動
• Freezing point being exceeded 凝固點被超過

Which of these is an example of an amorphous solid?

• Salt 鹽
• Quartz 石英
• Butter 黃油
• Ice 冰

Why can you bend and shape glass when it is heated but not break crystals the same way?

• Glass is an amorphous solid 玻璃是非晶體固體
• Crystals are softer than glass 晶體比玻璃軟
• Glass melts at a lower temperature 玻璃的熔點較低
• Crystals have no particles 晶體沒有粒子

What property of liquids allows water to stick to your hands after washing?

• Viscosity 黏性
• Surface tension 表面張力
• Thermal energy 熱能
• Melting point 熔點

Which of the following describes gas particles?

• Fixed and vibrating 固定並振動
• Closely packed 緊密排列
• Widely spaced and moving freely 分散並自由移動
• Sliding past each other 互相滑動

Why does the smell of popcorn reach the back of the classroom?

• Gas particles spread out evenly 氣體粒子均勻擴散
• The smell is heavier than air 氣味比空氣重
• The classroom has lower pressure 教室內壓力較低
• Evaporation occurs quickly 快速蒸發

What property of water explains why droplets form perfect spheres on a leaf?

• Viscosity 黏性
• Surface tension 表面張力
• Evaporation 蒸發
• Freezing 凝固

Which of the following has no definite shape but a definite volume?

• Solid 固體
• Gas 氣體
• Liquid 液體
• Plasma 等離子體