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
slega [8]
3 years ago
9

Which activity is an example of a chemical change?

Biology
1 answer:
Pavlova-9 [17]3 years ago
4 0

Answer:

An old penny rusting

Explanation:

A penny forming rust is the penny being chemically altered and changing form as opposed to dissolving sugar in water, which is still sugar, just mixed with water. It doesn't change the chemical makeup of the water or sugar.

You might be interested in
2. Some organisms are more likely to survive because they
lutik1710 [3]

Answer: B

Explanation:

5 0
3 years ago
How are humans responsible for environmental pollution​
Reptile [31]

Answer:

Humans are responsible for the environmental pollution in many ways . Some of the points are as follows :

1 ) People throw the wastes wherever they like instead of using dustbins .

2 ) The various types of gases from the industries which harms the nature .

3 ) Cutting off the trees . ( people can cut but also must plant a new one )

4 ) Farmers using different chemical substances in high amount in the crops .

5 ) Burning plastics , tires etc .

This was my way to answer the question , if you need then you can write in paragraph .

let me know if its incorrect . :-)

5 0
3 years ago
What happens to the speed of a chemical reaction when a catalyst is present
olga2289 [7]
The speed of a chemical reaction when a catalyst is present is that it. A.) It speeds up
6 0
3 years ago
Hows y'alls day been
elena-s [515]

Answer:

Pretty good! How about you?

Explanation:

- Akito

6 0
3 years ago
Read 2 more answers
The absorption of water in the small intestine depends on the absorption of what else?​
ivanzaharov [21]

Answer:Water is absorbed by osmosis and lipids by passive diffusion throughout the small intestine.

Explanation:In the colon endocrine mechanisms used include: Aldosterone – increases the net absorption of water and electrolytes by stimulating the basolateral sodium-potassium ATP-ase. This increases the electrochemical gradient and driving force for sodium absorption.

3 0
3 years ago
Other questions:
  • Select all the apply proteins__.
    14·1 answer
  • Cells that are active in protein synthesis are filled with which of the following?
    11·2 answers
  • Which group of organisms would Schleiden have been most likely to study?
    15·2 answers
  • Question
    9·1 answer
  • If we are in a pool submerged in water and someone shouts from outside, do we hear the sound? What happens on your tour? What ph
    5·1 answer
  • Chromosome is to cactus as gene is to _____.
    10·1 answer
  • Someone help please.
    5·1 answer
  • The DNA molecule could be compared
    11·1 answer
  • Colorblindness is a sex-linked recessive trait carried on the X chromosome. If a woman with
    11·1 answer
  • Excitatory stimuli generally cause the membrane potential of a neuron to
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!