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3 years ago

Sugar dissolving in tea is it chemical or physical change?

Chemistry

1 answer:

coldgirl [10]3 years ago

5 0

Answer:

it is a physical change because when you heat up again a solution of sugar and tea you gonna obtain again sugar

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An overseas flight leaves New York in the late afternoon and arrives in London 8.50 hours later. The airline distance from New Y

Evgesh-ka [11]

Answer:

v = 658.82 km/h

Explanation:

The distance between New York and London is $5.6\times 10^3\ km$

Time taken from New York to London is 8.5 hours

We need to find the average speed of the plane.

Total distance covered divided by the total time taken is equal to the average speed of an object. So,

$v=\dfrac{d}{t}\\\\v=\dfrac{5.6\times 10^3\ km}{8.5\ h}\\\\v=658.82\ km/h$

So, the average speed of the plane is 658.82 km/h.

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3 years ago

Which set of chemical name and chemical formula for the same compound is correct??

Kruka [31]

The correct answer to your question is: <span>C) tin (IV) bromide, SnBr₄</span>

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3 years ago

Which lists mixtures, in order, from the smallest particles to the largest particles?

Kisachek [45]

Answer:

A. Solution, Colloid, Suspension

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3 years ago

Select the correct answer. Based on the reactivities of the elements involved, which reaction will form products that are more s

FinnZ [79.3K]

Answer: The correct answer is option B.

Explanation: Reactivity of elements is defined as the tendency to loose or gain electrons.

These reactions are a type of single displacement reactions. A single displacement reaction is a type of reaction in which an element displaces another element in a chemical reaction. These are studied with the help of reactivity series.

The element which lies above in the reactivity series can easily displace the element which lies below in the reactivity series.

Option A: This reaction will not yield a stable product because Zinc lies below Aluminium in the reactivity series.

$AlBr_3+Zn\rightarrow \text{No reaction}$

Option B: This reaction will yield a stable product because Sodium lies above Calcium in the reactivity series.

$CaBr_2+2Na\rightarrow 2NaBr+Ca$

Option C: This reaction will not yield a stable product because Hydrogen lies below Magnesium in the reactivity series.

$MgBr_2+H_2\rightarrow \text{No reaction}$

Option D: This reaction will not yield a stable product because Calcium lies below Barium in the reactivity series.

$BaBr_2+Ca\rightarrow \text{No reaction}$

Option E: This reaction will not yield a stable product because barium lies below Lithium in the reactivity series.

$2LiBr+Ba\rightarrow \text{No reaction}$

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3 years ago

The distance between particles______when the temperature increases and

LekaFEV [45]

Answer:

increases

decreases

Explanation:

The distance between particles increases when the temperature increases and decreases when temperature decreases.

Temperature changes in a system causes the particle of such system to behave in different ways.
When particles gain heat energy as their temperature increases, they begin to move further apart.
As their temperature reduces they tend to coalesce.

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3 years ago

Sugar dissolving in tea is it chemical or physical change?​

Sugar dissolving in tea is it chemical or physical change?