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
Vitek1552 [10]
3 years ago
8

What are three signs that a chemical change has taken place

Chemistry
1 answer:
vladimir1956 [14]3 years ago
8 0
Three signs that a chemical change has taken place is 1) color change 2) formation of gas bubbles 3) a change in temperature ( if you have ever bleached your hair the reason why it is warm to the touch is because of a chemical reaction)
You might be interested in
The kinetic molecular theory states that all particles of an ideal gas are
Marizza181 [45]

THE KINETIC MOLECULAR THEORY STATES THAT ALL PARTICLES OF AN IDEAL GAS ARE IN CONSTANT MOTION AND EXHIBITS PERFECT ELASTIC COLLISIONS.

Explanation:

An ideal gas is an imaginary gas whose behavior perfectly fits all the assumptions of the kinetic-molecular theory. In reality, gases are not ideal, but are very close to being so under most everyday conditions.

The kinetic-molecular theory as it applies to gases has five basic assumptions.

  • Gases consist of very large numbers of tiny spherical particles that are far apart from one another compared to their size.
  • Gas particles are in constant rapid motion in random directions.
  • Collisions between gas particles and between particles and the container walls are elastic collisions.
  • The average kinetic energy of gas particles is dependent upon the temperature of the gas.
  • There are no forces of attraction or repulsion between gas particles.
5 0
3 years ago
CH4(g) + H2O(g) CO(g) + 3H2(g)
boyakko [2]
Presuming the arrow is between H20 and CO

On the left there are 2 gas moles.
On the right there are 4 gas moles.

The equilibrium will shift to the side with the most no. He gas moles when pressure is decreased.

Therefore the answer is A, since 4>2.

If you have any questions, feel free to ask
5 0
3 years ago
Which of the elements are nonmetals?
Elis [28]
The answer is E and F.

Hope this helps!!
8 0
3 years ago
Read 2 more answers
Pls I need help with these ques. help plsssssssssssssss
snow_lady [41]

Answer:

q1..no.2 and 4 are aromatic

6 0
4 years ago
Name 3 things that rainforest and deserts have in common
Arturiano [62]
Some similarities between deserts and rainforests are that they support complex ecosystems, are powered by the sun/photosynthetic plants, are dangerous/mostly uninhabitable for humans, due to both conditions and wildlife, and are found mostly in the tropics
3 0
3 years ago
Read 2 more answers
Other questions:
  • Which element has four eletrons in its outer p orbitals?
    6·1 answer
  • Select all that apply to physical and chemical properties ?
    9·2 answers
  • What volume is occupied by 8.7 g of chlorine gas, Cl2, at 23°C and 1.15 atm pressure
    14·1 answer
  • the bunsen burners in your labs are fueled by natural gas which is mostly methane. the thermochemical equation for the combustio
    5·1 answer
  • If you have 0.045 L of 0.465 M potassium bromide. How many moles of potassium bromide are present?
    6·1 answer
  • Que. 1. Gallium has 2 naturally occuring Isotopes with mass numbers 69 & 71 respectively. What is the percentage abundance o
    12·1 answer
  • .What type of energy includes both kinetic and potential energy?
    11·2 answers
  • Which compound is insoluble in water?
    14·2 answers
  • Can anyone please help
    15·1 answer
  • In a star, nuclear fusion occurs in the
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!