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
Paul [167]
3 years ago
6

Why are elements and compounds classified as pure substances?

Chemistry
1 answer:
IgorC [24]3 years ago
3 0

Pure substances contain a single type of chemical species, either element or compound. Elements cannot be further broken into simpler units by chemical methods. If we consider a sample of elements, it has a single type of atoms present in it. A compound has one or more atoms bound together chemically. Compounds can be broken down into simpler units by chemical means. When we consider a sample of a single compound say water, it has all the pure water molecules. Hence, elements and compounds are pure substances.

You might be interested in
Salinity is a measure of which of the following in water?
Lemur [1.5K]
The answer is dissolved salts
8 0
2 years ago
Read 2 more answers
Which of the following correctly describes the law of conservation of energy
egoroff_w [7]
Mass and energy can not be created or destroyed, they may be able to just be converted, and neither one seems without the opposite. For this reason in closed systems, both mass and energy are conserved individually. " I hope this helps "
3 0
3 years ago
Why can scientists ignore the forces of attraction between particles in a gas under ordinary conditions
Alika [10]
<span>Scientists ignore the forces of attraction between particles in a gas under ordinary conditions</span><span> because the particles in a gas are apart and moving fast, rather than clustered and moving slow, therefore the forces of attraction are too weak to have a visible effect.</span>
3 0
2 years ago
40 liters is equal to?<br> A. 40 cm3<br> B. 40 m3<br> C. 4,000 ml
9966 [12]
B I think sorry if I’m wrong
5 0
3 years ago
Read 2 more answers
Which statement best describes the way a catalyst works?
bogdanovich [222]

Answer: E. It decreases the value of Eact.

Explanation:

Activation energy is the extra energy that must be supplied to reactants in order to cross the energy barrier and thus convert to products.

A catalyst is a substance which increases the rate of a reaction by taking the reaction through a different path which involves lower activation energy and thus more molecules can cross the energy barrier and more molecules convert to products.

The catalyst itself does not take part in the chemical reaction and is regenerated as such at the end.

6 0
3 years ago
Other questions:
  • This element is used to improve the conductivity of germanium.
    13·1 answer
  • Which enthalpy change (î"h) is correct for a substance changing from the liquid phase to the solid phase?
    6·1 answer
  • Which of the following accounts for the differences among the various amino acids
    10·1 answer
  • 2. How does a particles energy change as it changes state?
    6·1 answer
  • A student is doing chemistry lab using strong acid and starts eating
    11·1 answer
  • Question 911 point)
    7·1 answer
  • The pH of a 0.0001 M NaOH solution is (note: For strong bases such as NaOH, the hydroxide ion concentration is the same as the c
    6·1 answer
  • Could someone help me with this too? Much appreciated! I am a bit stuck.
    7·1 answer
  • Warm air masses tend to originate from:
    9·2 answers
  • Nancy learned in school that composting is a way to cycle nutrients, and as tiny ecosystems, composting requires biotic and abio
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!