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
jasenka [17]
3 years ago
9

Which of the following is a chemical change?

Biology
2 answers:
irga5000 [103]3 years ago
8 0
The answer is letter D!
Dmitriy789 [7]3 years ago
3 0

Answer:

D. silver tarnishing as the silver metal reacts with sulfur​

Explanation:

A chemical change occurs when the identity of a substance is changed. Silver tarnishing is a chemical change because silver and sulfur react to form a new substance, silver sulfide. In the other examples, the substances have not changed their identity and only physical changes have occurred.

You might be interested in
What is the primary purpose of the chromosomes in a cells nucleus?​
Vladimir79 [104]

Answer:

They are made of protein and one molecule of deoxyribonucleic acid (DNA). As the genetic material passes from parents to child, the chromosomes are responsible for containing the instructions that make the offspring unique while still carrying traits from the parent.

5 0
3 years ago
Read 2 more answers
Evolution best explains
Mila [183]
The answer is D. the way organisms grow and develop
5 0
3 years ago
In which process of meiosis do the chromosomes line
Doss [256]

Answer:

During metaphase, each of the 46 chromosomes line up along the center of the cell at the metaphase plate.

Explanation:

4 0
3 years ago
Photosyntheis and resperationMove to Bottom Carbon dioxide is a product.A. Carbon dioxide is a reactant.B. Carried out in animal
EleoNora [17]

Answer:

The correct answer is-

1. Photosynthesis- Carbon dioxide is a reactant, Oxygen is a product,  Carried out in plants, Produces usable energy source.

2. Respiration- Carbon dioxide is a product, Oxygen is reactant, Carried out in animals, Produces usable energy source.

Explanation:

Photosynthesis is a complex process which takes place in the green plants which synthesize the energy molecule called glucose. The reaction takes place in the presence of sunlight combining the carbon dioxide and water forming the glucose and oxygen gas.

Respiration is a complex process which involves the breakdown of the glucose molecule in the presence of oxygen and forming the energy molecule called ATP which is utilized in the metabolic reactions. The complex process releases carbon dioxide.

3 0
3 years ago
You are standing by a cliff far away from the ocean. You see a sedimentary layer with shells in it. You
Dafna1 [17]
I think this layer formed by the strong currents or by waves slowly moving the shells to the shore along with other shells creating a layer of shells. If I’m wrong then I’m sorry:(
4 0
3 years ago
Other questions:
  • In the film Avengers: Infinity War the main villain, Thanos, wipes out half of the life in the universe. His rational for doing
    13·2 answers
  • While in South America, you come across what you think are two groups of birds in the same location. They are nearly identical a
    6·1 answer
  • The smallest functional unit of a living thing is a
    11·1 answer
  • Antibiotics can be used to treat
    11·2 answers
  • Which comic book featured the first appearance of iron man?
    12·2 answers
  • Where are proteins digested?
    10·2 answers
  • Which are the youngest fossils and in what type do they occur?​
    6·1 answer
  • Temperature and pH can affect how an enzyme works because
    14·1 answer
  • A ______ coloration would be the most beneficial adaptation for insects that live in the grass.
    13·2 answers
  • The main dietary factor associated with elevated blood cholesterol is?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!