Question

A physical property can be observed or measured without changing the identity of a substance. Which of these choices is an example of a physical property?

A.

the effect of acid rain on automobiles

B.

the tarnishing of silverware

C.

the texture of a piece of chocolate

D.

the combustion of gasoline in a car engine

Answer 1

@somy

Answer 2

ik u told me about physical property but im not sure on this 1

Answer 3

at least can u tell me which one looks like chemical property?

Answer 4

um D?

Answer 5

good job)

Answer 6

u r burning thus u r changing chemical composition, so it is NOT physical as u chose)

Answer 7

thx

Answer 8

wait that not the answer lol

Answer 9

oh

Answer 10

what do u think about A?

Answer 11

its acid rain thus can react with things that automobiles are made of so again its chemical property

Answer 12

ok

Answer 13

can u tell me what is the tarnishing of silverware?

Answer 14

omg i just noticed that we have the same smartscore lol and no i cant i dont know what tarnishing is

Answer 15

tar·nish


/ˈtärniSH/


verb

gerund or present participle: tarnishing





lose or cause to lose luster, especially as a result of exposure to air or moisture.

"silver tarnishes too easily"


synonyms: discolor, rust, oxidize, corrode, stain, dull, blacken More


"gold does not tarnish easily"



antonyms: polish, brighten


•

make or become less valuable or respected.

"his regime had not been tarnished by human rights abuses"


synonyms: sully, blacken, stain, blemish, blot, taint, soil, ruin, disgrace, mar, damage, harm, hurt, undermine, dishonor, stigmatize; More


literarybesmirch

"it tarnished his reputation"



antonyms: enhance




Origin



late Middle English (as a verb): from French terniss-, lengthened stem of ternir, from terne ‘dark, dull.’



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Use over time for: tarnishing

Answer 16

What was that ?

Answer 17

:X

Answer 18

thats the deffiniton of tarnish cuz i didnt know what it was

Answer 19

somy is the answer C?

Answer 20

yes

Answer 21

ok thx

Answer 22

u r welcome)

Answer 23

i have alot more lol

Answer 24

Silver tarnish is like rust on iron...Its a chemical identity

Answer 25

k

Answer 26

In the laboratory, Austin is given a mixture of iron filings, sand, and salt. To separate the mixture, Austin uses a magnet, boiling water, and a filter. Which statement is true about the process Austin uses to separate this mixture?
A.

Austin uses only physical changes to separate the mixture’s components.

B.

Austin uses only chemical changes to separate the mixture’s components.

C.

Austin uses both physical and chemical changes to separate the mixture’s components.

D.

Austin uses neither physical nor chemical changes to separate the mixture’s components.

Answer 27

ok

Answer 28

I'll go with A

Answer 29

Should i explain it ?

Answer 30

no

Answer 31

magnet is for taking iron filings
boiling water is for salt
filter is for sand

Answer 32

am i right @Abhisar ?

Answer 33

yes....filings are separated by magnet...then water is poured in the rest mixture.....salt dissolves and sand is left behind as residue which is then separated via filter. Again water is boiled which leaves behind the salt

Answer 34

magnet - physical property
boiling water is to dissolve salt, but we are still not changing its chemical state, so again its physical
filter- because sand is like precipitate we can easily separate it and again physical property

Answer 35

All these are physical changes since each can be reversed by simple physical methods

Answer 36

yup so its A as @Abhisar said :)

Answer 37

i hope u understand it? @it_meh_miranda

Answer 38

yes ok and guess what on my stove i turned it on high and i have these jumbo marshmellows and and put it on a fork and i put it on there and i roasted it and now it is golden everwhere lol perfect way to make a marshmellow

Answer 39

lol enjoying? @it_meh_miranda

Answer 40

yup

Answer 41

nice :)

Answer 42

want 1 ill make u 1 lol

Answer 43

Its bad to have them alone...u should share it :D

Answer 44

lol

Answer 45

i wish it was possible to transfer food as in conjugation :3 @Abhisar

Answer 46

hahah

Answer 47

LOL

Answer 48

Btw u can....order a pizza for me online LMAO :D

Answer 49

lol i have a pizza right now

Answer 50

;( ;( ;(

Answer 51

sharing is caring @it_meh_miranda lol

Answer 52

lol

Answer 53

A molecule is involved in a chemical reaction, causing the arrangement of its atoms to change. What is the result of this process?
A.

The mixture is separated into its component parts.

B.

New atoms are formed.

C.

A different molecule with different properties is formed.

D.

Bonds are neither formed nor broken, so mass is conserved.

Answer 54

i think its C.

A different molecule with different properties is formed.

Answer 55

let me check just in case

Answer 56

k

Answer 57

http://www.chemteam.info/Matter/PhysicalChemChanges.html
i still think its C

Answer 58

New atoms are formed. -is ridiculous new atoms can never be formed here, only atoms that were there will still be there but in different compounds now, thats it
Bonds are neither formed nor broken, so mass is conserved.- wrong, the question is saying that arrangement of atoms was changed that just means some bonds were broken and some was made