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Law Incorporation [45]
3 years ago
15

what is the technique for testing different chemicals known as ? it says that when they were burnt, they gave off a different co

lour ... so what is that technique known as ?
Chemistry
1 answer:
docker41 [41]3 years ago
4 0

Answer:

A flame test is an analytical procedure used in chemistry to detect the presence of certain elements, primarily metal ions, based on each element's characteristic emission spectrum. The color of flames in general also depends on temperature; see flame color.

Explanation:

I hope it's help u ;)

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Why are valence electrons important when considering the bonds that form between atoms g
salantis [7]

Answer:Covalent bonding occurs when pairs of electrons are shared by atoms. Atoms will covalently bond with other atoms in order to gain more stability, which is gained by forming a full electron shell. By sharing their outer most (valence) electrons, atoms can fill up their outer electron shell and gain stability.

Explanation::)

7 0
3 years ago
A piece of gold wire has a diameter of .175cm. How much will precisely 1.00 x 10^5 cm of the wire weigh
Alona [7]
The main information we have to use here is the density of gold. From literature, the density of gold at room temperature is 19.32 g/cm³. To determine the mass, let's calculate the volume first. A wire is in the shape of a cylinder. Thus, the volume would be

V = πd²h/4
V = π(0.175 cm)²(1×10⁵ cm)/4
V = 2,405.28 cm³

Density = mass/volume
19.32 g/cm³ = Mass/2,405.28 cm³
Mass = 46,470 g gold wire
7 0
3 years ago
When was helium discoved?
andrey2020 [161]
It was discovered in 1868.i hope this helps you .
4 0
3 years ago
All matter can be classified by their physical properties. Which substance can be classified as being soluble in water
My name is Ann [436]
The substance that can be classified as being soluble in water would be salt. The solution is D. Salt specifically is composed of ions and the ionic compound dissociates within water.
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3 years ago
Define the term pH in acid and base​
Kaylis [27]

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a measure of how acidic/base water is.

Explanation:

hope it's helpful (◕ᴗ◕✿)

3 0
2 years ago
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