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
zalisa [80]
3 years ago
7

Which of the following is an example of a physical change?

Chemistry
2 answers:
o-na [289]3 years ago
7 0

Answer:

I think b is the correct answer

just olya [345]3 years ago
4 0

Answer:evaporation in a swamp cooler

Explanation:

Evaporation in a swamp cooler simply involves the conversion of water in the liquid state to water in the gaseous state. It is an easily reversible process if the vapour can be collected and condensed. A chemical change involves the formation of a new substance and is not easily reversible. It is a chemical reaction. A dry cell operates by a chemical change which produces voltage in the cell. Digestion involves a series of irreversible chemical reactions catalysed by enzymes. Hence the answer.

You might be interested in
Help me answer this please
Vlada [557]
<span>1=H, 2=B, 3=F, 4=A,5=C,6=E, 7=D, 8=G
</span>9: 69Ga=60.12% and 71Ga=39.88%; total=69.797amu
10: 27  27.977  92.23; 28  28.976  4.67; 29  29.974  3.10; abundance =28.07 Silicon

I hope this helps!
8 0
3 years ago
The most condensed state of matter is <br> A. solid<br> B. liquid <br> C. gas <br> D. plasma
algol [13]
The most condensed state of matter is A. Solid Matter
6 0
3 years ago
Read 2 more answers
PLLLLLLLZ HELP IS NEEDED ASAP I WOULD REALLY APPRECIATE IT
Lesechka [4]

Answer:

1)Reactants

2)Light

3)An item that can increase reaction rates

4)Reactants must collide with each other

Less molecules lower the chance for collisions

The more collisions there are the higher the reaction rate

5 0
3 years ago
one ball rolls along a shelf at a steady rate. a second ball rolls off the shelf and gains speed as it falls in a curved path. w
Salsk061 [2.6K]
The ball that rolls at a steady rate
6 0
3 years ago
What are table sugar and baking soda examples of
schepotkina [342]

Answer:

Examples of pure substances include tin, sulfur, diamond, water, pure sugar (sucrose), table salt (sodium chloride) and baking soda (sodium bicarbonate). Crystals, in general, are pure substances. Tin, sulfur, and diamond are examples of pure substances that are chemical elements. All elements are pure substances.

Explanation:

PLEASE MARK ME AS BRAINLIEST

4 0
2 years ago
Other questions:
  • A laboratory technician combined sodium hydroxide with excess iron(II) nitrate. A reaction took place according to this chemical
    6·1 answer
  • 3) Calculate the percent by mass of 3.55 g NaCl dissolved in 88 g water.
    9·1 answer
  • 1. What % of the nation's energy is used by the Industrial<br> Sector?
    9·1 answer
  • Sulfur reacts with oxygen and creates two compounds. Compound A contains 1.34 g of sulfur for every 0.86 g of oxygen. Compound B
    14·1 answer
  • How many electrons are represented by a dash (-) in a lewis dot structure compound
    7·2 answers
  • How do chemists use systems and order in their work?
    10·1 answer
  • 4.07 x 10-17<br> (5.6 x 10") (5.8 x 105)
    5·1 answer
  • Which one of these terms represents the chemistry definition and why are the other three wrong? Please help
    12·1 answer
  • How does the sun get so hot.​
    8·1 answer
  • When a plant _____, roots grow and a seedling begins to grow?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!