Question

EXPERIMENT: FORMS OF CHANGE
Here are your goals for this lesson:

Determine the change as physical or chemical
Write a scientific report including the specifications given in the experiment

A physical change is a change in the size and shape of a substance. Hardness, shape, mass, and density are physical properties which may be involved in a physical change. In a chemical change, however, new substances with different physical properties are produced.

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In this investigation, you will be conducting a simple experiment. You will classify the result as a physical or chemical change. It is up to you to determine the type of change. Use the steps of the scientific method as you work.



EXPERIMENT
Supplies needed: sugar, beaker or dish, water, stirring rod or teaspoon

Instructions:

1. Place several teaspoons of sugar in a small beaker half full of water, and stir until the water is clear.

2. Pour some of the solution into a dish. Set the dish on a shelf or a windowsill. Observe the dish for a day or two. Record what you observe.



Compile a scientific report from your hypotheses, observations, data, inferences, and conclusions. Be sure to answer the questions below in your summary and include your personal findings.

What did you observe after the solution set in the dish for a day or two?

What kind of change (physical or chemical) occurred in this experiment?

How do you know the kind of change?

What happened to the sugar?

Name another mixture that could be separated in this way.

What did you find out from this experiment? Be thoughtful in your answer.

Answer 1

we can't do the whole assiment

Answer 2

Can't different ppl do different questions?

Answer 3

mabey

Answer 4

but we should not do that cause we would be practily doing it for u

Answer 5

Isn't that what this site is for???

Answer 6

yes but we can't do it for u sorry

Answer 7

sorry that deosn't work

Answer 8

yeah she is right we can only explain it to u tho

Answer 9

Sooo can you explain it??

Answer 10

i ahve to go but i am sure redhead will help u

Answer 11

ha but yeah i will tho

Answer 12

Okie

Answer 13

wait have u done the experment tho?

Answer 14

No, I don't have to tho they just want me to use logic

Answer 15

oh make since lmao

Answer 16

Mhm

Answer 17

ok the first one is after observing the solution making it sit in dish water for 2 to 3 days i saw that the sugar has desolved.

Answer 18

lol tho ha funny

Answer 19

oh also i am not explaining it i am going to tell u the answers since no one is her shhhhh lmao

Answer 20

here*

Answer 21

Lmao ok

Answer 22

the second one is, When liquid water ( H2O ) freezes into a solid state (ice), it appears changed; However, this change is only physical as the the composition of the constituent molecules is the same: 11.19% hydrogen and 88.81% oxygen by mass.

Answer 23

oh wait wat grade r u in i am 10th sorry if thats to much

Answer 24

Ahah I'm in 8th

Answer 25

oh ight then

Answer 26

None of that made sense in my brain

Answer 27

i am not understanding the 3rd one wat does it mean ?

Answer 28

Idek

Answer 29

is it talking abt physical or chemical change?

Answer 30

wait nvm i get it

Answer 31

Okay

Answer 32

Chemical properties of matter describes its "potential" to undergo some chemical change or reaction by virtue of its composition. What elements, electrons, and bonding are present to give the potential for chemical change. It is quite difficult to define a chemical property without using the word "change". Eventually you should be able to look at the formula of a compound and state some chemical property. At this time this is very difficult to do and you are not expected to be able to do it. For example hydrogen has the potential to ignite and explode given the right conditions. This is a chemical property. Metals in general have they chemical property of reacting with an acid. Zinc reacts with hydrochloric acid to produce hydrogen gas.

Answer 33

Woah

Answer 34

number 4 is,the sugar had desolved

Answer 35

lol idk how to word that but my fault

Answer 36

It's okayy

Answer 37

number 5,is Evaporation can be used as the samething as I did in the experement

Answer 38

wat i found out in this experiment is that once the salt had hit the water it had desolved and that is bc when salt is mixed with water, the salt dissolves because the covalent bonds of water are stronger than the ionic bonds in the salt molecules. ... Water molecules pull the sodium and chloride ions apart, breaking the ionic bond that held them together.

Answer 39

and there u go lol

Answer 40

Is that it? lol

Answer 41

yeah all 6 is there

Answer 42

lol

Answer 43

Okay Thank you!!

Answer 44

yes np happy to help if u have anymore questions just ask me ight

Answer 45

Alrighty