Question

⦁ Please help me!! Which of these are examples of physical properties? Be able to defend your answers.

A brown dog-

A melting ice cube-

A burning campfire-

A bendable straw-

A rusty nail-

Answer 1

@desuoverlord

Answer 2

@Nnesha

Answer 3

@pooja195

Answer 4

@mayafrancis

Answer 5

@SamsungFanBoy

Answer 6

Can you pick more than 1?

Answer 7

yes

Answer 8

and i have to explain why an why not

Answer 9

Okay, do you have any idea which ones it might be? Hint: there's more than one

Answer 10

melting ice burning campfire

Answer 11

Alright, melting ice is correct, that is a physical change. Do you know why?

Answer 12

no i dont

Answer 13

Well, ice is just solid water, right? Frozen H2O.
So basically, when you melt ice, you're just turning a solid into a liquid. Solid/liquid/gas are all a physical state of being. The chemical properties are the still same.

Answer 14

ohhhhh

Answer 15

Now, burning a campfire, that would have to be chemical.
There's one more physical one. The signs of a chemical change are a change in color, formation of a precipitate, formation of a gas, odor change and temperature change. Try again keeping this in mind

Answer 16

a rusty nail

Answer 17

Rust is definitely a chemical change. It's a chemical reaction to iron and steel reacting to water and oxygen over a long period of time.

Answer 18

Also, I'd actually say there are two other examples of physical properties besides a melting ice cube

Answer 19

well is it a brown dog

Answer 20

ohhh and bendable straw

Answer 21

Yes. Do you understand why? Bending a straw changes absolutely nothing about the chemical composition of the straw, you're simply changing its /physical/ state.

Now, if you had said that the dog's color changed, that would be chemical. But since it's not, the color of the dog is just one of its physical properties

Answer 22

okay thank you so so so so so so so so so much

Answer 23

No problem :) happy to help