Chemistry, 08.07.2019 08:30 baileyrw

Which of the following is an example of a chemical change? a. ice melting b. milk souring c. pounding gold into a coin d. a puddle of water evaporating

Answers: 1

Show answers

Answers

Answer from: daijafoster0

Which of the following is an example of a chemical change? B. Milk souring

Answer from: SupremeDiaz17

B. milk souring

Explanation:

A chemical change occurs when a react happens a compound if transformed in another one, or it's breaking down to its elements. On the other hand, a physical change occurs when there is a change in the physic state of the compound, when it passes from solid to liquid, for example.

So, ice melting is a physic change, as so a puddle of water evaporating. To pound gold into a coin, first is necessary to melting it to form the coin format, the solidify it again, so it's a physical change.

When milk sours, it's happening chemical reactions with some microorganisms, as bacteria and fungi, that transform it in compounds with the sour smell. Then, it's a chemical change.

Answer from: Quest

the correct answer is answer a. a mixture

no other options make sense

hope this

have a great day : )

- sprinkles

Answer from: Quest

Olá. porque a reação na temperatura é muito rapida a do copo : )

Another question on Chemistry

Chemistry, 22.06.2019 03:30

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.

Answers: 2

Answer

Chemistry, 22.06.2019 11:40

Which type of precipitation would most likely form when the surface air temperature is slightly below freezing and the air temperature increases as you move upward away from the ground?

Answers: 2

Answer

Chemistry, 22.06.2019 14:50

Given the following information: mass of proton = 1.00728 amu mass of neutron = 1.00866 amu mass of electron = 5.486 × 10^-4 amu speed of light = 2.9979 × 10^8 m/s calculate the nuclear binding energy (absolute value) of 3li^6. which has an atomic mass of 6.015126 amu. j/mol.

Answers: 2

Answer

Chemistry, 22.06.2019 16:00

He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98

Answers: 2

Answer

You know the right answer?

Which of the following is an example of a chemical change? a. ice melting b. milk souring c. pound...

Questions