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zvonat [6]
3 years ago
13

PLZ HELP I NEED THIS NOW I WILL GIVE BRAINLIEST PLZ HELPPPPIn your own words, describe the process of a physical change.

Chemistry
1 answer:
ryzh [129]3 years ago
3 0

Answer:

Explanation:

Physical changes changes when objects or substances undergo a change that does not change their chemical composition.

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1 Copy and complete using the words below:
Aleks [24]

Answer:

The elements in__Group_ 0 of the Periodic Table are called the_noble__gases. They are generally __unreactive_. because they have a__full_outer shell of electrons. So they do not need to gain__lose_or share _electrons_ with other atoms.

5 0
4 years ago
An ordered list of chemical substances is shown. Chemical Substances 1 CuO 2 O2 3 CO2 4 NO2 5 Fe 6 H2O Which substances in the l
a_sh-v [17]

Answer:

reactants: 2 O2

products: 3 CO2, 4 NO2, 6 H2O

Explanation:

In a combustion, a combustible material, which generally is composed of C, H, O, N, and S, is combusted, that is, react with oxygen after a spark was produced; obtaining fire, heat and subproducts, including ashes and gases.

Oxygen is always one of the reactants of a combustion.

If Nitrogen was present in the combustible, NO2 (or other nitrogen oxides) will be produced.

If Carbon was present in the combustible, CO2 will be produced (also CO can be produced).

If Hydrogen was present in the combustible, H2O will be produced.

7 0
4 years ago
What is differentiation
pashok25 [27]

Answer:

The Definition of Differentiation

The derivative is the instantaneous rate of change of a function with respect to one of its variables. This is equivalent to finding the slope of the tangent line to the function at a point

Explanation:

3 0
3 years ago
The total amount of energy before and
Mnenie [13.5K]

Answer:

C: It is conserved

Explanation:

The reaction neither lost (exothermic) or gained (endothermic) energy, therefore the total energy remained the same and was conserved.

5 0
3 years ago
Read 2 more answers
For the balanced equation: 2H2S + 3O2 → 2SO2 + 2H2O
Irina-Kira [14]

Answer:

8 moles SO₂

Explanation:

To find the moles SO₂, you need to multiply the given value by the mole-to-mole ratio. This ratio, between O₂ and SO₂, is made up of the coefficients from the balanced equation.

2 H₂S + 3 O₂ -----> 2 SO₂ + 2 H₂O

12 moles O₂          2 moles SO₂
--------------------  x  ----------------------  =  8 moles SO₂
                               3 moles O₂

6 0
2 years ago
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