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baherus [9]
2 years ago
11

Differentiate between elements and mixtures

Chemistry
2 answers:
viktelen [127]2 years ago
4 0

Answer:

Explanation:

<h2>Mixtures:</h2>

1- are made up of two or more kinds of Compounds .

2-Mixtures has no definite properties

3-The various constituents are seperated by simple physical means.

4-Examples: Sand, oil and water  mixture of iron fillings and sulfur

<h2>ELEMENTS;</h2>

1-Elements are made up of one kind of atoms.  (It is the basic unit of matter, which cannot be broken down into substances by any way but can be combined to form new substances. )                      

2-Elements have their own set of properties.

3-Elements cannot be broken down into simpler substances by any physical or chemical method.

4-Examples: Hydrogen, Oxygen

<h2> </h2><h2> </h2><h2 />
Ksenya-84 [330]2 years ago
3 0

Answer:

ELEMENTS MIXTURE

Elements are made up of one kind of atoms. Mixtures are made up of two or more kinds of Compounds .

Elements cannot be broken down into simpler substances by any physical or chemical method. The various constituents are seperated by simple physical means

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Phantasy [73]

Answer:

What single percentage change is equivalent to a 11% increase followed by a 15% increase?

Explanation:

What single percentage change is equivalent to a 11% increase followed by a 15% increase?

6 0
3 years ago
Read 2 more answers
In general, atomic radii:
Artist 52 [7]

<u>Answer:</u> The correct answer is Option E.

<u>Explanation:</u>

Atomic radius is defined as the total distance measured from the nucleus of an atom to the outermost shell.

<u>Trend down the group:</u>

Moving from top to bottom, a new shell gets add up around the nucleus and the outermost shell gets far away from the nucleus. Due to this, the distance between the nucleus and outermost shell increases, which results in the increase of atomic radii of the atom.

<u>Trend across the period:</u>

Moving from left to right in a period, more and more electrons gets add up in the same shell. The attraction between the last electron and the nucleus increases. This results in the shrinkage of size of an atom. Thus, decreasing the atomic radii of the atom.

Hence, the correct answer is Option E.

5 0
3 years ago
How was your day????????​
Trava [24]

Answer:

I literally just woke up for school hehe

3 0
3 years ago
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One of the emission lines that provides the green color in fireworks, which com s from barium salts, has a wavelength of 505nm.
PSYCHO15rus [73]

Explanation:

(a)

The relation between frequency and wavelength is shown below as:

c=frequency\times Wavelength&#10;

c is the speed of light having value 3\times 10^8\ m/s

Given, Wavelength = 505 nm

Also, 1 m = 10^{-9} nm

So,  

Wavelength = 505\times 10^{-9} m

Thus, Frequency is:

Frequency=\frac{c}{Wavelength}

Frequency=\frac{3\times 10^8}{505\times 10^{-9}}\ Hz

Frequency=5.94\times 10^{14}\ Hz

(b)

Also, E=\frac {h\times c}{\lambda}

Where,  

h is Plank's constant having value 6.626\times 10^{-34}\ Js

c is the speed of light having value 3\times 10^8\ m/s

So,

E=\frac{6.626\times 10^{-34}\times 3\times 10^8}{505\times 10^{-9}}\ J

E=\frac{10^{-26}\times \:19.878}{10^{-9}\times \:505}\ J

E=3.94\times 10^{-19}\ J

(c)

Electromagnetic spectrum is range of the frequencies and their respective wavelengths of the various type of the electromagnetic radiation.

In order of the increasing frequency and the photon energy and the decreasing wavelength the spectrum are:  

Red , Orange, Yellow, Green, Blue, Indigo, Violet

Increasing wavelength is the opposite trend. Thus, The longest visible wavelength is red and the shortest is violet.

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3 years ago
This item is used for small cuts and peeling.
kicyunya [14]
I would say #3 I’m sorry if it’s wrong tho
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