[8th Grade] Week 2 Quiz

Last updated over 1 year ago

4 questions

1

Last updated over 1 year ago

4 questions

1

Is making fire a physical property or a chemical property? How do you know? 生火是物理性质还是化学性质？你怎么知道？

1

1

a piece of iron rusts, 一块铁生锈，

water freezes into ice, 水冻结成冰，

you start a fire, 你生火，

wax gets soft as it warms up, 蜡加热时变软，

you bend a piece of metal, 你弯曲一块金属，

aluminum and sodium hydroxide react to make hydrogen gas, 铝和氢氧化钠反应产生氢气

True

False

Which of these are chemical properties: 
以下哪些是化学性质：

a piece of iron rusts, 一块铁生锈，

water freezes into ice, 水冻结成冰，

you start a fire, 你生火，

wax gets soft as it warms up, 蜡加热时变软，

you bend a piece of metal, 你弯曲一块金属，

aluminum and sodium hydroxide react to make hydrogen gas, 铝和氢氧化钠反应产生氢气

Steel can be separated into iron and carbon, true or false 钢可以分为铁和碳, 正确或错误

True

False