Answer:
Explanation:
Take out your periodic table.
The choices that have one 1 member of the periodic table on it are elements.
He is the symbol for Helium
O2 oxygen
C3 but this is really odd. It is Carbon but Carbon usually does not combine in 3s.
The rest are all compounds (they are made up of the elements on the periodic table). For example
H2SO4
is made up of 2 Hydrogens
1 sulfur
4 oxygens.
All the others do exactly the same thing.
Answer:
In chemistry, a colloid is a mixture in which one substance of microscopically dispersed insoluble or soluble particles is suspended throughout another substance. ... Some colloids are translucent because of the Tyndall effect, which is the scattering of light by particles in the colloid.
Credit to: Colloid - Wikipedia
https://en.wikipedia.org › wiki › Colloid
Explanation:
I believe this is correct! :D
Answer:
a limiting rule or circumstance; a restriction.
Example:
Also knowing her limitations, she'd declined the invitation to join them
Answer:
The answer to your question is given below
Explanation:
1. Alkali metals are simply metals of the group 1 elements, because they 1 valence electron. Noble gas on the other hand are simply the group zero element, because they have zero valence electron.
2. Alkali metals react with water to form alkalis hence they are called alkali metals. Noble gas does not take part in any reaction hence they are referred to as noble gas.
3. Alkali metals have incomplete octet configuration while noble gas has complete octet configuration.
4. Alkali metals are all solid at room temperature, while noble gas are all gases at room temperature
