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
Iteru [2.4K]
3 years ago
11

Define a physical change and give one example

Chemistry
1 answer:
ladessa [460]3 years ago
7 0

Answer:

The definition of a physical change is: A physical change is a type of change in which the form of matter is altered but one substance is not transformed into another. The size or shape of matter may be changed but no chemical reactions occur.

An example of physical change is: crumbling a piece of paper or freezing water into ice.

You might be interested in
Define the following solar features in detail: Solar flare: Sunspot Prominence:
Over [174]
Solar flare: a brief eruption of intense high-energy radiation from the sun's surface, associated with sunspots and causing electromagnetic disturbances on the earth, as with radio frequency communications and power line transmissions.

Sunspot Prominence: It is a large, bright, gaseous feature extending outward from the Sun's surface, often in a loop shape. It is similar to a Solar Flare

Hope this help 
3 0
2 years ago
What is the smallest unit that makes up matter?
nalin [4]
The smallest unit that make up the matter is atoms.
PLEASE MAKE IT BRAINLEST I NEED ONLY 1 LAST BRAINLIST FOR MY PROMOTION
6 0
2 years ago
Read 2 more answers
The mass number of an atom is equal to which of the following?
Phantasy [73]
Mass number is equal to the number of protons plus the number of neutrons in a nucleus of an atom
4 0
2 years ago
use dimensional analysis to determine how many atoms of o2 produced in a reaction that yields 2 mol of o2
Alex73 [517]

The number of atoms of oxygen is 2.4 * 10^24.

<h3>How many atoms are produced?</h3>

We know that mole of a substance contains the Avogadro's number of atoms. The Avogadro's number gives the number of atoms, molecules, ions and atoms that could be found in one mole of a substance.

Now;

Given that ;

1 mole of oxygen contains two atoms of oxygen, the number of atoms that are contained in 2 moles of the oxygen molecule is;

2 * 2 * 6.023 * 10^23

= 2.4 * 10^24

Learn more about dimensional analysis:brainly.com/question/13078117

#SPJ1

8 0
1 year ago
Wat the answer wat do i do here
suter [353]
1. Hand Lens
2. Observing
7 0
2 years ago
Read 2 more answers
Other questions:
  • HELP ME PLZ ITS REALLY IMPORTANT! PLEASE TRY TO DO ALL!!
    6·1 answer
  • The combustion of 1 mol ch4 releases 803 kj of energy. how much energy is produced from the combustion of 5.00 mol ch4.
    12·1 answer
  • Ainda sobre a combustao completa do metanol que pode ser representada pela equação nao-balanceada abaixo. Quando se utilizam 8,0
    11·1 answer
  • Which of the following is NOT a good way to reduce pollutants in paint shops? A) Use extra topcoat color to get better coverage
    14·1 answer
  • What causes pressure inside a helium balloon?
    8·1 answer
  • This data was collected after conducting an experiment about the amount, in liters, of water a specific plant needs per month. A
    10·2 answers
  • Which of the following bases is the STRONGEST? The base is followed by its Kb.A. C6H5NH2, 4.0 × 10-10 B. NH3, 1.76 × 10-5 C. CH3
    6·1 answer
  • Why increasing the temperature of a gas would increase the volume of its container in gas law?
    6·1 answer
  • 9. A student wished to prepare ethylene gas by dehydration of ethanol at 140oC using sulfuric acid as the dehydrating agent. A l
    10·1 answer
  • What is the name of the high-energy molecule used by cells?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!