Ask question

Ask question

All categories

3 years ago

14

What are some examples of physical changes?

2 answers:

Lorico [155]3 years ago

5 0

Answer: Melting of ice to water is a physical change. Evaporation, Freezing are also physical change. Cutting of wood, breaking of glass are also examples. Any change in size and phase but does not change its chemical composition is an example of a physical change.

Explanation:

Ludmilka [50]3 years ago

3 0

Some examples of physical changes are:

Breaking a glass

Chopping wood

Tearing paper

Mixing sand and water

Melting an ice cube

These all are physical changes because the composition of the matter does not change.

You might be interested in

Need help fast!!

stepan [7]

Answer:

The answer is "5.18 ".

Explanation:

It's a question of chemistry. Therefore, the following solution is provided:

We will first determine the solution's pOH. The following can possible:

The concentration of Hydroxide ion $[OH^{-}] = 1.5\times 10^{-9}\ M$

$pOH =?\\\\pOH = -\log [OH^{-}]\\\\pOH = -\log 1.5\times 10^{-9}\\\\pOH = 8.82\\\\$

Furthermore, the pH of the solution shall be established. It was provided as follows:

$pOH = 8.82\\\\pH =?\\\\pH + pOH = 14\\\\pH + 8.82 = 14\\\\$

When collecting all the like terms:

$pH = 14 -8.82\\\\pH = 5.18$

Therefore, the solution of pH is 5.18.

8 0

3 years ago

An aluminum plate is 78 cm wide and 35 cm long. The mass of the plate is 44,226 g. Determine its thickness. [The density of lead

Artemon [7]

Answer:

i try to solve it for you, and i aplode a similer question for you

Explanation:

6 0

3 years ago

In a undisturbed layer, how do we know which layer was deposited first ?

OLEGan [10]

Answer:

It's the bottom layer.

Explanation:

Scientists use the Law of Superposition to determine the relative age of a layer of sedimentary rock:

The oldest rock layer is at the bottom of an undisturbed bed.

Thus, Layer A in the figure below was deposited first.

8 0

3 years ago

HELP LAST QUESTION WILL MAKE BRAINLIEST

Alenkasestr [34]

Answer:

I think it is C.)????

4 0

3 years ago

Ii What is the state of matter just before a substance melts?

S_A_V [24]

Answer:

solid

it is in solid state

7 0

4 years ago