ゼラチンは、冷えると固まる性質があります。

Gelatine has the property of setting as it cools.

ゼラチンは、冷(ひ)えると固(かた)まる性質(せいしつ)があります。

Zerachin wa, hieru to katamaru seishitsu ga arimasu.

ゼラチン (ゼラチン、ジェラチン)

gelatin; gelatine

は (は)

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

冷える (ひえる)

to grow cold (from room temperature, e.g. in refrigerator); to get chilly; to cool down

と (と)

if; when; and; with; particle used for quoting (with speech, thoughts, etc.); quoting particle; promoted pawn; indicates question (sentence end)

固まる (かたまる)

to harden; to solidify; to become firm; to become certain; to gather (together); to assemble; to huddle together

性質 (せいしつ)

nature; property; disposition

が (が)

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

有る (ある)

to be (usu. of inanimate objects); to exist; to live; to have; to be located; to be equipped with; to happen; to come about

Readings: レイ、つめ.たい、ひ.える、ひ.や、ひ.ややか、ひ.やす、ひ.やかす、さ.める、さ.ます

Meanings: cool, cold (beer, person), chill

Readings: コ、かた.める、かた.まる、かた.まり、かた.い

Meanings: harden, set, clot, curdle

Readings: セイ、ショウ、さが

Meanings: sex, gender, nature

Readings: シツ、シチ、チ、たち、ただ.す、もと、わりふ

Meanings: substance, quality, matter, temperament