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
solniwko [45]
3 years ago
8

Which of these statements best describes the relationship between elements, compounds, and pure substances?

Chemistry
2 answers:
Tamiku [17]3 years ago
7 0

Answer:

Pure substances can be divided into two groups: elements and compounds.

Explanation:

Pure substances can be recognized because they have a definite constant composition, as can be seen in the formula, and distinct chemical properties.

For example, H₂O is a pure substance where the relation of 2 atoms of Hydrogen to 1 atom of Oxygen is always true. O₂ is also a pure substance because 1 molecule of O₂ always contains two atoms of Oxygen.

As we can see from above, pure substances can be formed by one or more types of atoms. Substances formed by 2 or more types of atoms are known as compounds (e.g. H₂O, CO₂). Substances formed by 1 type of atoms are known as elements (e.g. Na, O₂, O₃).

Compounds and elements are kinds of pure substances, so they inherit all properties from them (definite constant composition, distinct chemical properties).

olchik [2.2K]3 years ago
5 0

pure substances can be divided into two groups; elements and compounds

You might be interested in
Help please the questions are confusing
SashulF [63]

Answer:

5- number of electrons=11

Explanation:

in a neutral atom number of protons=number of electrons which in this case=11

3 0
3 years ago
Read 2 more answers
How many atoms are in 68.44 grams
creativ13 [48]
Correct answer There are 68 grams are in atoms
3 0
3 years ago
Which term names enzymes in the body that speed up chemical reactions?
Viefleur [7K]

Answer:

Catalyst speeds up the chemical reactions. Catalyst is the compound that adds to the chemical reaction so that it happen more quickly. Catalyst without being consumed in the reaction accelerates the reaction. It lowers down the activation energy of the transition state and thus accelerates the reaction.

Hope this helped!

Plz mark me as Brainliest!

7 0
2 years ago
Read 2 more answers
A solid substance formed when two aqueous solutions are mixed is known as a
lys-0071 [83]

Answer:

b. precipitate is your answer

3 0
2 years ago
Read 2 more answers
) How many moles are there in 2.00 x 10^19 molecules of calcium phosphate?
Tamiku [17]

Answer:

\huge 3.322 \times  {10}^{ - 5}  \:  \: moles  \\

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{2.00 \times  {10}^{19} }{6.02 \times  {10}^{23} }  \\  \\  = 3.322 \times  {10}^{ - 5}  \:  \: moles

Hope this helps you

4 0
3 years ago
Other questions:
  • What effect will increased pressure have on 4A (g) + 5B (g) ---> 2C (g) + 7D (g) 
    6·1 answer
  • 1. What is the weight of the ethyl alcohol that exactly fills a 200.0 mL container? The density of ethyl alcohol is 0.789 g/mL
    14·1 answer
  • Which property of an object depends on its location?
    10·1 answer
  • What is the molarity when 8.0 moles of solute are dissolved in 1.5 liters of solution?
    7·2 answers
  • Which statement correctly describes the ionization of acids?
    15·1 answer
  • What mass of sucrose c12h22o11 is needed to make 300 ml of a 0.50m solution?
    10·1 answer
  • Name the following inorganic compounds:
    10·1 answer
  • Identify the intermolecular attractions for dimethyl ether and for ethyl alcohol. Which molecule is expected to be more soluble
    10·1 answer
  • A student says that since the atomic theory is just a theory, it should not be considered useful. Which
    11·1 answer
  • Which of the following most completely describes a redox reaction?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!