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2 years ago

Why can you change physical properties and not make a new substance but can't change chemical properties and stay the same?

Chemistry

1 answer:

maxonik [38]2 years ago

8 0

Answer:

Well this has a good chance of being wrong but i wanna say,

When you change a physical property of something it doesn't affect the chemicals that make it up. Like Ice, you can freeze water to make ice. You change a physical property (state of matter) but it's chemical properties don't change because in the end it's still water.

However if you remove a chemical property from something you are changing what made the new substance with will also change the substance along with it.

That's just what I think though

Explanation:

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which law states that the volume and temperature are inversly proportional in a fixed quantity of gas

svlad2 [7]

The Charles Law : The Temperature-Volume Law

(One of the Charles laws is the temperature volume law)

Hope this helped

7 0

2 years ago

Can you place the following elements in order of decreasing atomic size: selenium, chlorine, fluorine, rubidium, calcium, and su

sukhopar [10]

In periodic table, size increases from top to bottom and will decrease from left to right.
So the order will be :
- Rubidium
- Calcium
- Selenium
- Sulfur
- Chlorine
- fluorine

hope this helps

4 0

3 years ago

Read 2 more answers

Copper has an atomic number of 29 and a mass number of 64. what would result if an uncharged copper atom lost two electrons?

nikklg [1K]

The atomic mass of an element is the number of times of an atom of that element is heavier than an atom of carbon taken as 12. In simpler way, atomic mass is number of protons present in nucleus of an atom, which is a characteristic of an chemical element and is determines place of the element in the periodic table. Mass number is total number of protons and neutrons. If an uncharged atom looses electron from its outermost shell, it becomes cation, which is positively charged species. Atomic number and mass number do not change if electron goes out of an atom.

Uncharged copper after loosing two electrons is converted to $Cu^{2+}$ which can be represented as follows:

$Cu_{29} ^{64}$ → $Cu^{2+}$

3 0

2 years ago

Read 2 more answers

If oxygen, symbol o, undergoes a covalent bond it wants to form how many bonds

polet [3.4K]

Oxygen has 16 bonds in total

5 0

3 years ago

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When a lead acid car battery is recharged by the alternator, it acts essentially as an electrolytic cell in which solid lead(II)

lesya692 [45]

Answer: The mass of lead deposited on the cathode of the battery is 1.523 g.

Explanation:

Given: Current = 62.0 A

Time = 23.0 sec

Formula used to calculate charge is as follows.

$Q = I \times t$

where,

Q = charge

I = current

t = time

Substitute the values into above formula as follows.

$Q = I \times t\\= 62.0 A \times 23.0 sec\\= 1426 C$

It is known that 1 mole of a substance tends to deposit a charge of 96500 C. Therefore, number of moles obtained by 1426 C of charge is as follows.

$Moles = \frac{1426 C}{96500 C/mol}\\= 0.0147 mol$

The oxidation state of Pb in $PbSO_{4}$ is 2. So, moles deposited by Pb is as follows.

$Moles of Pb = \frac{0.0147}{2}\\= 0.00735 mol$

It is known that molar mass of lead (Pb) is 207.2 g/mol. Now, mass of lead is calculated as follows.

$No. of moles = \frac{mass}{molar mass}\\ 0.00735 = \frac{mass}{207.2 g/mol}\\mass = 1.523 g$

Thus, we can conclude that the mass of lead deposited on the cathode of the battery is 1.523 g.

3 0

2 years ago