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
patriot [66]
3 years ago
6

Give examples of temporaty physical change

Chemistry
1 answer:
garri49 [273]3 years ago
3 0

ice because it can melt back to water


You might be interested in
A) Of options (a) - (d) below, highlight the (unbalanced) chemical equation that represents
labwork [276]

Answer:

c...............

Explanation:.............................yuuuuuuuuuuuuuuuuuuuuuwoopuuuuuuuu

7 0
3 years ago
K forms the compound K₂O, which is an ionic compound that is brittle. Identify another element, M, that is likely to form a brit
Lena [83]

Answer:

Na₂O will also form a brittle ionic compound.

Explanation:

Sodium is located in the same group as Potassium: Alkali Metals. This is because both elements have similar chemical properties. In term of their electronegativity, both elements are very close. Na has an electronegativity of 0.93, while K has an electronegativity of 0.82. This makes both ideal elements to create ionic compounds with Oxygen.

5 0
3 years ago
Read 2 more answers
Write the formula for the polyatomic ion in fe(hco3)3. express your answer as an ion.
Juliette [100K]
Ions can be atomic or molecular. If an atom contains either positive or negative charge it said to be atomic cation or atomic anion.

When a molecule carry positive or negative charge it is called as polyatomic cation or polyatomic anion. Generally charged or ionized molecules are called as polyatomic ions.

In given question Fe(HCO₃)₃ ionizes as follow,

                         Fe(HCO₃)₃    →    Fe³⁺  +  3 HCO₃⁻

The Ions produced are Fe³⁺ and HCO₃⁻. Fe³⁺ is said to be atomic (Ferric) ion and HCO₃⁻ (Bicarbonate) is polyatomic ion or molecular ion.

6 0
3 years ago
A. Use the following steps to balance the redox reaction below. Al(s) Ni2 (aq) Ni(s) Al3 (aq)
Alja [10]

Answer:

2Al(s) +3Ni²⁺(aq) ⟶ 2Al³⁺(aq) + 3Ni(s)  

Explanation:

The unbalanced equation is

Al(s) + Ni²⁺(aq) ⟶ Ni(s) + Al³⁺(aq)

(i) Half-reactions

Al(s) ⟶ Al³⁺(aq) + 3e⁻

Ni²⁺(aq) + 2e⁻ ⟶ Ni(s)

(ii) Balance charges

2 × [Al(s) ⟶ Al³⁺(aq) + 3e⁻]

3 × [Ni²⁺(aq) + 2e⁻ ⟶ Ni(s)]

gives

2Al(s) ⟶ 2Al³⁺(aq) + 6e⁻

3Ni²⁺(aq) + 6e⁻ ⟶ 3Ni(s)

(iii) Add equations

2Al(s) ⟶ 2Al³⁺(aq) + 6e⁻

<u>3Ni²⁺(aq) + 6e⁻ ⟶ 3Ni(s)                                       </u>  

2Al(s) +3Ni²⁺(aq) + <em>6e</em>⁻ ⟶ 2Al³⁺(aq) + 3Ni(s) + <em>6e⁻ </em>

Simplify (cancel electrons)

2Al(s) +3Ni²⁺(aq) ⟶ 2Al³⁺(aq) + 3Ni(s)

8 0
3 years ago
A dependent variable is
Anuta_ua [19.1K]

Answer:

a variable (often denoted by y) whose value depends of that of another.

Explanation:

on g00gle duhh just look it up. :)

7 0
2 years ago
Other questions:
  • Example of gas gas mixture
    9·1 answer
  • Which of the following best describes the formation of plasma?
    8·1 answer
  • What process uses analysis of the decay of atomic particles to determine exact age?
    10·2 answers
  • Which statement is true regarding the sublimation of dry ice (solid co2?
    7·1 answer
  • Is this how you would draw Lewis structure for NO2?
    13·1 answer
  • Calculate the molarity of the solution formed when 0.72 moles of CaBr2 is dissolved in 1.50 L water.
    8·1 answer
  • A gas mixture consists of equal masses of methane (molecular weight 16.0) and argon (atomic weight 40.0). If the partial pressur
    12·1 answer
  • How are Newton's three laws of motion related
    10·2 answers
  • When air is heated, its density<br> A. Increases<br> B. Decreases<br> C. stays the same
    15·2 answers
  • Some animals that live in extremely cold environments protect themselves from freezing by increasing the molality of certain che
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!