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
Ludmilka [50]
2 years ago
12

PLZ HELP which of the following is an example of a physical change ​

Chemistry
2 answers:
Elena L [17]2 years ago
8 0

Answer:

C.matter changes,but no new substance is formed.

lubasha [3.4K]2 years ago
7 0

Answer:

D. A piece of food turns brown and starts to smell bad is the answer because it is physical change and physical change is permanent change

You might be interested in
A chlorine atom in its ground state has a total of seven electrons in orbitals related to the atoms third energy level. how many
kiruha [24]
<span>5 electrons

</span>The electron configuration of an atom shows or describes the distribution of electrons in their atomic orbitals. In particular, it shows the distribution in terms of the principal energy levels or electron shells (reflected by the numbers 1, 2, 3, 4, 5, 6, 7) and their corresponding subshells (reflected by the letters s,p,d,f,g) composed of atomic orbitals. 

The maximum number of electrons in the s-subshell is 2, in the p-subshell, 6, in the d-subshell, 10, in the f-subshell, 14, and in the g-subshell, 18. In the electron configuration of an atom, the number of electrons in the subshell for a given atom is reflected by a number (in superscript) next to the corresponding letter of the subshell. 
 
<span>The electron configuration of a chlorine atom in its ground state is 
</span>1s^{2}2s^{2}2p^{6}3s^{2}3p^{5}

Thus, the number of electrons in the 3rd energy level in the p-subshell is 5 (3p^{5} as seen in the electron configuration of the atom). 
7 0
2 years ago
Determine the mass of hydrogen chloride needed to react completely with 12.8 g of aluminum to produce aluminum chloride and hydr
Hoochie [10]
First write out the eqn, and balance it.

next, take 12.8g/mr of aluminium
this will give u the mols of aluminium

next, take the ratio of HCL and Al, compare and find the mols of HCL.

take the mols of HCL/mr of HCL to give u mass

doneee
5 0
3 years ago
What is true of all atoms?
Klio2033 [76]

Answer:

Atoms are the building blocks of matter. They are the smallest particles of an element that still have the element's properties. All atoms are very small, but atoms of different elements vary in size. Three main types of particles that make up all atoms are protons, neutrons, and electrons.

Explanation:

7 0
2 years ago
Read 2 more answers
According to the nebular theory what are asteroids and comets
Nimfa-mama [501]
Asteroids are made up of metals and rocky material , while comets are made up of ice ,dust and rocky material.   
4 0
3 years ago
KOH +HBr KBr+ H2O<br><br> Which is the acid in this reaction?
Allisa [31]

Answer:

HBr Potassium bromide

5 0
3 years ago
Read 2 more answers
Other questions:
  • A student prepared an equilibrium solution by mixing the following solutions:A.2.00 mL of 0.00250 M Fe(NO3)3B.5.00 mL of 0.00250
    7·1 answer
  • Which of the following describes an element that is reduced in a reaction? It acts in the reactant that is the reducing agent. I
    11·1 answer
  • How many liters of hydrogen gas are needed to react completely with 50.0 L of chlorine gas at STP ?
    15·1 answer
  • Combination reactions always forms what?
    10·1 answer
  • PLEASE HELP!! 50 POINTS!!! WILL MARK BRAINLEST!!!!
    12·2 answers
  • Pure phosgene gas (COCl2), 0.0340 mol, was placed in a 1.50−L container. It was heated to 700.0 K, and at equilibrium, the press
    6·1 answer
  • In a typical ecosystem, the largest amount of biomass should be found at which level?
    15·1 answer
  • What is the mole ratio of iron (III) chloride (FeCl3) to zinc chloride (ZnCl2) ?
    5·1 answer
  • What provides support and transportation of materials for a plant​
    8·2 answers
  • Which term describes energy stored in the bonds between atoms?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!