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
Lubov Fominskaja [6]
3 years ago
15

A substance that cannot be separated into simpler substances by physical or chemical means is a

Chemistry
1 answer:
Montano1993 [528]3 years ago
7 0
Pure Substance- Element

Explanation:

Pure Substance VS. Mixture:
A pure Substance CANNOT be separated by physical changes, but a Mixture can.

PURE SUBSTANCE: Element VS. Compound:
An Element is one simple atom while a compound is two or more.
Example: Al (Aluminum) is an Element. CaCl (Calcium Chloride) is a compound.
You can split a compound with chemical changes because if you were to take the example, it would be a Calcium atom and a Chlorine atom.
You CANNOT split a single atom (Element) unless you want to make an atomic bomb which takes a lot of energy and you don’t want to destroy the whole world.

MIXTURE: Homogeneous VS. Heterogeneous:

Homo- mixed; cannot differentiate pieces
Hetero- can differentiate pieces
EX: homo- ketchup (can you see the difference in the vinegar and tomato paste? No)
Hetero- chicken noodle soup (there’s broth, chicken, peas, carrots, and other things)
You might be interested in
Which is a spectator ion in the reaction between Na2CO3(aq) and HNO3(aq)?
Korolek [52]
If you need help reading it then ask away, the two answers end up being, 2Na, and 2NO3

6 0
3 years ago
Read 2 more answers
Which oneeeeeeeeeeeee
fgiga [73]

Answer:

Memes are the best

Explanation:

3 0
3 years ago
Read 2 more answers
A chemical reaction takes place in a closed system. The mass of the reactants before the reaction was 35 grams. What must the ma
Reil [10]
The chemical rehearsal is founded by the national association of university or education defines as mathematical.
5 0
3 years ago
If the sun rises at 7:36am and sets at 6:00pm, what times would we use for our data in the 24-hour clock format?
Dmitrij [34]
C is the answer I used to work at McDonald’s I know military time
6 0
3 years ago
What will happen to convection currents in the mantle if earths interior eventually cools down?
VLD [36.1K]
If the core were to cool completely, the planet would grow cold and dead. It also would get a little dark: Power utilities pull radiant heat from Earth's crust and use it to heat water, the steam from which powers turbines to create electricity.Cooling also could cost us the magnetic shield around the planet created by heat from the core. This shield protects Earth from cosmic radiation. The shield is created by a convection process caused by constantly moving iron. Like the planet itself, Earth's core is constantly spinning. Some scientists think it's moving even faster than the rest of the planet. The friction converts kinetic energy into electrical and magnetic energy that forms the field, which deflects harmful, charged particles emanating from the sun toward the north and south poles. Your welcome :)
6 0
4 years ago
Other questions:
  • Magnesium oxide does not readily decompose into magnesium and oxygen. The reaction is shown below. MgO(s) + 601.7 kJ mc017-1.jpg
    12·2 answers
  • Which option is the most accurate description of speed?
    8·2 answers
  • Chemical Formula 1
    12·1 answer
  • What is the dissociation constant of water (Kw) at 25oC? Calculate the pH of pure water at 25 oC (Show your work!). If the disso
    11·1 answer
  • Which of the following materials is a substance, silver, air ,gasoline or staintless steel?
    10·1 answer
  • How many molecules are in .25 mole of O2
    10·1 answer
  • At a particular temperature, the solubility of O₂ in water is 0.0500 M when the partial pressure is 0.120 atm. What will the sol
    11·1 answer
  • Can you help me on all of these question? (mostly on question number 4)
    11·2 answers
  • Which substance can not be decomposed by a chemical change?
    9·1 answer
  • 7. If a waste container has 87.0 mL of 0.234 M acetic acid, how many milliliters of 2.00 M sodium
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!