1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
QveST [7]
3 years ago
8

I. Boiling water and producing water vapor II. Freezing liquid water into ice cubes III. Mixing salt into a beaker of water unti

l the salt dissolves IV. Combining hydrogen gas and oxygen gas in a way to make liquid water When a chemical change occurs something new is formed. The reactants have different properties than the products. The product cannot easily be separated into its original parts. Of the four examples listed above, which describe a chemical change? A) I. B) IV C) III. D) II.
Chemistry
2 answers:
SVEN [57.7K]3 years ago
6 0

B) IV

why ?

because :  describes a chemical change. Something new is formed. The product, water, is very different from hydrogen gas and oxygen gas.

alexandr402 [8]3 years ago
5 0

B) IV, because all the others are physical changes and cannot be reversed.

You might be interested in
Pairs
BabaBlast [244]

Atoms are made up of protons, neutrons, and electrons.

Energy can be neither created nor destroyed.

Water freezes at 0°C

If  a piece of platinum is placed in acid, it will not react.

<h3>What are the correct pairing of the given terms?</h3>

The correct pairing of the given terms are obtained from the given options as follows:

Atoms of elements contains three sub-atomic particles which are protons, neutrons, and electrons.

Energy is the ability to do work.

According to the law of conservation of energy, Energy can be neither created nor destroyed.

Water is a liquid which freezes at 0°C.

Therefore, Water freezes at 0°C.

Platinum is a metal which is less reactive than hydrogen, Hence, it cannot displace hydrogen from acids.

Hence, if a piece of platinum is placed in acid, it will not react.

In conclusion, the correct pairing gives the correct description of the properties of the given terms.

Learn more about atoms at: brainly.com/question/17545314

#SPJ1

3 0
1 year ago
Draw the structural formula for fatty acid C 18:2 9 a 12a
qwelly [4]

Answer:

............................................................................

Explanation:

7 0
2 years ago
HELP ME QUICK
Sophie [7]
Quick answer: Exothermic reactions mean that heat has escaped the system. The answer is A. Heat is released.
3 0
3 years ago
Read 2 more answers
Which technology was essential for the development of the cell theory?​
vodka [1.7K]

Answer: Microscope

Explanation: This is a kid answering :)

8 0
3 years ago
PLEASE HELP ME I BEG YOU
VladimirAG [237]

The average kinetic energy of 1 mole of a gas at -32 degrees Celsius is:
 
3.80 x 103 J

The relationship between volume and temperature of a gas, when pressure and moles of a gas are held constant, is: V*T = k.

FALSE

The relationship between moles and volume, when pressure and temperature of a gas are held constant, is: V/n = k. We could say then, that:
If the moles of gas are tripled, the volume must also triple.


 If the temperature and volume of a gas are held constant, an increase in pressure would most likely be caused by an increase in the number of moles of gas.

TRUE

If the vapor pressure of a liquid is less than the atmospheric pressure, the liquid will not boil.

TRUE


35 - AB

36 -  BD

33 - true

34 - False

20 - 6

21 - orthohombic


4 0
3 years ago
Other questions:
  • If the sentence is true, write true. If the sentence is false , replace the underlined word to make the sentence true.
    11·1 answer
  • A solution 0.20 molar in monomer (styrene) and 4.0 X 10-3 M in benzoyl peroxide initiator is heated at 60°C. kp = 145 liter/mole
    12·2 answers
  • If the difference is not great, this forms a(n) ____ bond.<br><br> Example: N2, and ____
    11·1 answer
  • A measure of the kinetic energy of particle motion within a substance is____
    14·1 answer
  • Given the system at equilibrium:
    6·1 answer
  • CH4(g)+O2(g)→CO2(g)+H2O(g). What mass of water is produced from the complete combustion of 5.00×10−3 g of methane?
    8·1 answer
  • The chemical formula for diiodine nonaflouride
    7·1 answer
  • Which statement best describes the process of nuclear fusion?
    13·1 answer
  • How many molecules of the compound are there?
    11·2 answers
  • Based on the electron configuration of the two atoms, predict the ratio of metal cationic (+) atom to nonmetal anionic (-) atom
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!