Question

At sea level, water ______ at 100°C.

Answer 1

boils

Answer 2

thats what I put and it was wrong

Answer 3

no it wasn't.

Answer 4

that's what it says that's all it would do it boil right?

Answer 5

yes. And who is "it"?

Answer 6

who is what?

Answer 7

you said-"that's what 'it' says".
who or what is 'it'?

Answer 8

a test it gave me a 0 for putting boils

Answer 9

well that test sucks

Answer 10

yes i know :( can u try to help me with another one please

Answer 11

sure :)

Answer 12

Cooking requires continuous addition of energy to the chemical reactions that are taking place. The chemical reactions involved in cooking can be described as ____________.

Answer 13

endothermic (means requiring or consuming heat as opposed to exothermic meaning giving off heat)

Answer 14

thank you so much!!! how about? Francium has 36 isotopes, but only francium-223 occurs in nature. Francium-223 spontaneously emits particles and energy, so francium-223 is a(an) ________ of francium.out

Answer 15

radioactive isotope.

Answer 16

thanks i just put isotope that"s why i got that one wrong

Answer 17

I'd put isotope and exothermic