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
Anna007 [38]
3 years ago
11

Which substance is a combination of different atoms?

Chemistry
2 answers:
coldgirl [10]3 years ago
5 0

Answer:

compound

Explanation:

koban [17]3 years ago
4 0
It is also a compound<span> because the atoms that make water are </span>not<span> all the same - some are oxygen and some are hydrogen. Oxygen in the atmosphere is a molecule because it is made from two atoms of oxygen. It is </span>not a compound<span> because it is made from atoms of only one element - oxygen.</span>
You might be interested in
Explain what a chemical reaction is and moles
Delvig [45]

Answer:

A process during which chemical bonds between atoms are broken and new ones are formed, producing one or more substances.

Moles are the amount of substance that contains as many particles.

Explanation:

A chemical reaction is when a chemical change occurs for example when a nail comes into contact with air and is then exposed to air it begins to rust. It forms a red-brown substance which changes the chemical composition of the original compound.

Examples of chemical reactions:

Combustion

Oxidation (rusting)

Cooking an egg

Photosynthesis

Digestion

Fireworks

Paper Burnin

The mole is the amount of substance that contains as many particles (molecules, ions or atoms) as there are in 12g of carbon.

1 mol is the amount of substance that contains the same number of particles as there are atoms in 12.0 g of carbon-12 and that number is referred to as Avogardo's constant (6.022 x 10^{23}).

3 0
2 years ago
Atoms are the smallest particles of a compound that still retain the properties of that
N76 [4]

Answer:

the answer is true

Explanation:

it is the smallest particle in an element that takes part in a chemical reaction

5 0
2 years ago
The pressure inside a pressure cooker is 2.0 atm. How many minutes will it take to cook 1.0 pound of potatoes in a pressure cook
suter [353]

Answer:

time taken to cook on the pressure cooker = 100 seconds = 1.67 mins

Explanation:

8 0
3 years ago
An object has a total mechanical energy of 150 J. At point A, the object has a kinetic energy
nika2105 [10]

Answer:

60 J

Explanation:

The law of conservation of energy states that energy is neither created nor destroyed, just converted into different forms. This means the total mechanical energy of the object at point A will be the same as the total mechanical energy at point B, and the question tells us the total of that mechanical energy is 150 J. Note we are assuming no energy is lost from the system as heat.

At point B, if the potential energy is 90 J, the remainder of the 150 J total must be kinetic energy. KE = 150 J - 90 J = 60 J.

8 0
3 years ago
25 Points Please Help ASAP!! View Attached Image!! Will Mark Brainliest If All Are Answered!!
KIM [24]

Answer:

Answers in explanation.

Explanation:

30. A (A chemical changes changes the chemical properties)

31. C (rusting is an example of a chemical change

32. B (A reaction requires energy, so some energy will be expelled)

33. B (Color change is an example of a chemical change)

34. A (The law of the conservation of mass: Mass and Energy cannot be created nor destroyed)

8 0
3 years ago
Other questions:
  • What mass of carbon monoxide must be burned to produce 175 kj of heat under standard state conditions?
    13·2 answers
  • Which phase would experience a decrease in the rate of dissolution with agitation
    12·1 answer
  • NEED HELP QUICK!!!!!!!!!!!!!!
    15·2 answers
  • Calculate the total mass of the protons and electrons in 19 9F. Use 1.007825 amu as the mass of 11H (mass of a proton and an ele
    6·1 answer
  • Describe how the energy consumption of appliances is dependent on the power rating of an appliance and the length of time that t
    11·1 answer
  • A3B8 + C2 ---&gt; AC2 +
    8·1 answer
  • How many molecules of oxygen are in 3.0 moles of oxygen?
    13·2 answers
  • A more reactive metal displaces a less reactive metal from salt solution. Such reactions are called:
    8·2 answers
  • Madison is heating two different liquids. For each liquid, she wants to compare the temperatures at which gas bubbles form, rise
    6·2 answers
  • The enthalpy of fusion for Hg is 2.29 kJ/mol. What is the energy change when 78.0 g of Hg melts at −38.8°C?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!