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
borishaifa [10]
3 years ago
8

Properties of substances can be classified as physical or chemical properties. Which statements describe chemical properties? (C

hoose all that apply)
A. A magnet is attracted to a piece of metal.
B. A wire sags when weight is attached to it.
C. Silver tarnishes and becomes black when exposed to oxygen.
D. Water heated over a flame begins to bubble and evaporate.
E. Diesel fuel burns when it is heated
Chemistry
1 answer:
Tamiku [17]3 years ago
5 0

The correct answers are options C, that is, silver tarnishes and becomes black when exposed to oxygen, and option E, that is, diesel fuel burns when it is heated.  

Chemical changes refer to the modifications in which the chemistry at molecular level is modified as the initial substance gets transformed into a new and different final substance. This change occurs with the dissociation of old bond and production of new bonds respectively.  

Silver gets tarnished and becomes black when exposed to oxygen. This refers to a chemical change as silver a white and lustrous substance gets transformed into a tarnish black final substance. However, silver does not easily react with oxygen at usual circumstances. It easily reacts with sulfur comprising components in the air and generates black compound as Ag₂S.  

Burning of diesel fuel when it is heated. Diesel refers to a mixture of hydrocarbons varying approximately from C₁₀H₂₀ to C₁₅H₂₈. When these hydrocarbons get burnt they generate novel substances, that is, carbon dioxide and water. Hence, it is also a chemical reaction.  


You might be interested in
5.0 g of NaCl is dissolved in water, and the solution is brought to a final volume of 150 mL. What is the molarity of this solut
Ksju [112]

Answer:

Molarity is a sort of concentration for solutions. When you talk about it, means mols of solute, that are in 1000 ml of solution. The molarity at this is 0.57M

Explanation:

As you have the solution in a volume of 150ml with 5 g of solute, in 1000 ml how much solute, do u have? The answer is 33.333g so now, you have to take the molar mass of NaCl and get the mols. Mass/molar mass, you will get the moles, so 33,3333 g / 58,44 g/m is 0.570 moles. That's M

6 0
4 years ago
An 85 kg construction worker has 37 485 J of gravitational potential energy. To the nearest whole number, the worker is___
Dmitry [639]

Answer:

44,1 m

Explanation:

Ep= m * g * h

37485 = 85 * 10 * h

h = 44,1 m

7 0
3 years ago
Match each alkane name with its structure.
9966 [12]

C3H8 = Propane

C7H16 = Heptane

C8H18 = Octane

C4H10 = butane

C10H22 = decane

6 0
3 years ago
Read 2 more answers
Is mud a suspension, solution, or colloid?
skelet666 [1.2K]
Mud is a suspension because it is a heterogeneous mixture that has many solid particles that have sedimented in various parts of the mixture, meaning they can be easily seen or removed. A solution is homogeneous like putting sugar in water or similar.
6 0
3 years ago
Read 2 more answers
How many grams of copper (I) chloride can be produced from the reaction of 73.5 g of copper (I) oxide with hydrochloric acid acc
natulia [17]

The balanced equation for the reaction is as follows

Cu₂O + 2HCl ---> 2CuCl + H₂O

Molar ratio of Cu₂O to CuCl is 1:2

mass of Cu₂O reacted - 73.5 g

Number of moles of Cu₂O reacted - 73.5 g / 143 g/mol = 0.51 mol

According to the molar ratio,

when 1 mol of  Cu₂O reacts then 2 mol of CuCl is formed

therefore when 0.51 mol of Cu₂O reacts then - 2 x 0.51 mol of CuCl is formed

number of CuCl moles formed - 1.02 mol

mass of CuCl formed - 1.02 mol x 99 g/mol = 101 g

mass of CuCl formed is 101 g

6 0
3 years ago
Other questions:
  • Please answer these for me
    11·1 answer
  • Dicing potatoes is a physical change. true or false?
    13·2 answers
  • A photon with 2.3 eV of energy can eject an electron from potassium. What is the corresponding wavelength of this type of light?
    11·1 answer
  • How do I figure out polarity? thanks!​
    6·2 answers
  • What is Mendeleev most known for?
    8·1 answer
  • What will most likely happen if a sound wave moves from the air through a solid?
    15·2 answers
  • Bored fr so so bored anyone at all wanna hang only if your from14-16
    13·2 answers
  • What type of reaction is the following
    13·1 answer
  • How many moles are in 98.3 grams of NaF?
    10·2 answers
  • Which of these actions would increase heat transfer between two objects?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!