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klemol [59]
4 years ago
11

What question can help u determine whether silver underwent is a chemical change or physical change

Chemistry
1 answer:
alexandr1967 [171]4 years ago
3 0
A question that can help you determine if silver underwent a chemical or psychic change is

1. is/has the substance changed? is it still the same or is it something completely new?
. if it is the same then its physical but if its not the same then its chemical.

.(ex:) if you cut up and paper into pieces then the substance hasn't changed because its still paper, just smaller xD this would be considered a psychic change.

.(ex:) if you burn a paper then the substance has change because its no longer paper/you can no longer write on it- this would be a chemical change.

another question would be

2. is it reversible? or not? (reversible- physical change) (not reversible - chemical change).


i hope that this kind of helps you.. xD sorry that its really long.
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Which of the compounds below will ionize in
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Which is NOT a component of the kinetic theory of matter?
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What is the relationship between the number of each atom used to form compound and oxidation number?
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6 0
3 years ago
Given the following unbalanced equation:
Lorico [155]
<h3>Answer:</h3>

8.01 mol MgO

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

<u>Chemistry</u>

<u>Atomic Structure</u>

  • Moles
  • Compounds

<u>Stoichiometry</u>

  • Using Dimensional Analysis
  • Analyzing Reactions RxN
<h3>Explanation:</h3>

<u>Step 1: Define</u>

[RxN - Unbalanced] Mg + O₂ → MgO

[RxN - Balanced] 2Mg + O₂ → 2MgO

[Given] 8.01 moles Mg

[Solve] moles MgO

<u>Step 2: Identify Conversions</u>

[RxN] 2 mol Mg → 2 mol MgO

<u>Step 3: Stoich</u>

  1. [DA] Set up:                                                                                                       \displaystyle 8.01 \ mol \ Mg(\frac{2 \ mol \ MgO}{2 \ mol \ Mg})
  2. [DA] Multiply/Divide [Cancel out units]:                                                          \displaystyle 8.01 \ mol \ MgO
3 0
3 years ago
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