physical change; phase change
Tone colorsmāmámǎmàma
Meanings
1 sense · 4 examplesnoun
physical change (in chemistry); a change in which only the physical form or state of matter is altered without generating new substances
formalIn chemistry, distinguished from chemical change (化学变化). Examples include melting, freezing, boiling, sublimation, and dissolution. The chemical composition and properties remain unchanged.
Shuǐ水
biàn变
chéng成
bīng冰
shì是
yī一
zhǒng种
wù物
lǐ理
biàn变
huà化
。
Water turning into ice is a physical change.
Qì汽
yóu油
huī挥
fā发
shì是
cháng常
jiàn见
de的
wù物
lǐ理
biàn变
huà化
。
Gasoline evaporating is a common physical change.
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Là蜡
shòu受
rè热
róng熔
huà化
shí时
bìng并
méi没
yǒu有
shēng生
chéng成
xīn新
wù物
zhì质
。
When wax melts from heating, no new substance is formed.
Gān干
bīng冰
shēng升
huá华
shǔ属
yú于
wù物
lǐ理
biàn变
huà化
。
Dry ice sublimation belongs to physical change.