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
Komok [63]
2 years ago
6

water H2O is made up of different elements hydrogen and oxygen is this type of combination of mixture or a pure substance

Chemistry
2 answers:
aivan3 [116]2 years ago
8 0

H2O is a compound it cannot be a pure substance

leonid [27]2 years ago
4 0

<u>Answer:</u> The given compound (water) is a pure substance

<u>Explanation:</u>

A pure substance is defined as the substance which is formed by same or different type of atoms which are chemically combined in a fixed ratio by mass.

Compounds and elements are considered as pure substances

A mixture is defined as the substance which is made by mixing two or more substances in any ratio.  They can be separated by physical means.

Water (H_2O) is formed by the combination of hydrogen and oxygen elements in z fixed ratio of 1 : 8 by mass. Therefore, it is considered as a compound.

Hence, the given compound (water) is a pure substance

You might be interested in
8. Adding up all of the of all of the individual atoms within one molecule of a compound will determine the
Aleonysh [2.5K]

Answer:

Option A = atomic masses

Explanation:

In compound molecular mass is the sum of the individual atomic masses of the atoms.

For example

Compound NaCl.

atomic weight of sodium = 23 g/mol

atomic weight of chlorine = 35.5 g/mol

Molar mass of NaCl = 23+ 35.5 = 58.5 g/mol

Every atom consist of nucleus or a positive center. The protons and neutrons are present with in the nucleus while electrons are present out side the nucleus. All these three subatomic particles construct an atom. The number of protons or number of electrons are the atomic number of an atom while the number of protons and number of neutrons are the mass number of an atom. A neutral atom have equal number of protons and electrons. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other.

4 0
2 years ago
Question 8 (9 points) <br><br>Match the lab equipment with its purpose
Deffense [45]

Answer:

\sf \boxed{4} \mapsto Pipet

\sf\boxed{7}\mapsto Test \:tube \: rack

\sf\boxed{3}\mapsto Test\: table

\sf\boxed{5}\mapsto Scoopula

\sf\boxed{1}\mapsto Graduated\: cylinder

\sf\boxed{9}\mapsto Bunsen \:burner

\sf\boxed{2}\mapsto Beaker

\sf \boxed{8}\mapsto Spot\: plate

\sf\boxed{6}\mapsto Goggles

Explanation:

Pipet is used to dispense a very small amount of liquid.

Test tube rack is used to hold multiple test tubes at the same time.

Test Table is used to view chemical reactions or hold or heat small amounts of substance.

Scoopula is used to dispense chemicals from a larger container.

Graduated cylinder is used to measure volume very precisely.

Bunsen burner is used to heat objects.

Beaker is used to transport heat or store substance.

Spot plate is used to observe the color changes of small quantities of a reacting mixture.

Goggles are used to protect the eyes from flying objects or chemical splashes.

_____________________________________________________

7 0
2 years ago
What type of elements generally bond covalently, and how do they satisfy the octet rule?
Alex Ar [27]

Answer:

Covalent, or, elements on the right side of the ladder (on the periodic table). Covalent compounds satisfy the octet rule by sharing electrons.

3 0
3 years ago
If calcium has two valence electrons and fluorine has seven, how many fluorine atoms are needed to form an ionic bond with calci
MaRussiya [10]
Fluorine needs one electron to fill its orbital shell. It needs 8 valence electrons
5 0
3 years ago
Read 2 more answers
4. The picture shows a full moon.
Anuta_ua [19.1K]

Answer:

A full moon occurs when the Moon appears as a complete circle in the sky.

Explanation:

- We see it as a full orb because the whole of the side of the Moon facing the Earth is lit up by the Sun's rays.

- The moon shows no visible light of its own, so we only see the parts of the moon that are lit up by other objects.

6 0
2 years ago
Read 2 more answers
Other questions:
  • The phase change in which a substance changes from a gas directly to a solid is _____..
    10·2 answers
  • Describe the negative effects of wind machines
    9·1 answer
  • What is an endpoint in chemistry???
    7·1 answer
  • Which is an example of an endothermic reaction?
    10·2 answers
  • Volaic cells produce a positive overall charge what does this indicate
    12·1 answer
  • A sound wave from a jackhammer travels through a section of concrete with a fixed frequency. At the concrete's boundary is mud.
    6·2 answers
  • How do scientsts determine is a newly found thing is dead or alive.
    9·1 answer
  • Do you think the ingredients changing into a cake
    14·1 answer
  • What are the materials made by chemists for use in washing clothes and cooking materials ​
    5·1 answer
  • Help please I dont know what goes where
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!