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The fact that hydrogen forms diatomic molecules makes it similar to what family?
Halogens
What is an 'indicator reaction'?
---- indicators are substances which change their colour when treated with acidic or basic solutions this reaction of changing their colour is known as indicator reaction ---- ----
What is chemical dehalogenation?
some chemical compounds contain halogens. The halogens are a group of elements- bromine/chlorine/iodine/fluorine. dehalogentation is the removal of these molecules from the compound
What type of reaction forms carbohydrates?
Metabolic Reaction
What reaction forms monomers?
Hydrolysis reactions forms monomers.
How are halogens represented in a chemical reaction?
halogens are represented the same way as alkaline metals, you can use subscripts
Why halogens act both as an electrophile and nucleophile?
depending upon the reaction conditions halogens act as electrophiles,nucleophiles and freeradicals
The purpose of adding hexane to the aqueous solutions of halogens?
to indicate the changes of colour and to determine whether displacement of halogen occur
Which group on the periodic table will gain an electron in reaction?
group 17 - the halogens
What are the reaction of other elements from actinium?
Actinium can react with halogens, oxygen, hydrogen.
Do halogens bleach or colour vegetable dye?
They bleach vegetable dyes and kill bacteria
What do Group 17 halogens form by gaining an electron and forms what?
negative ions
The fact that hydrogen forms diatomic molecules makes it similar to what family?
Halogens
What forms the colors of the rainbow?
The colours of a rainbow are in fact a continuum, which we divide into separate bands for our descriptive convenience. The cones in our eyes are the place where the wavelengths of light are converted into colour - for colour is a human reaction to that stimulus.
Why do halogens form ionic compounds with metals?
Halogens have a high electronegativity and metals have a low electronegativity in general. Therefore, metals tend to give up their valence electrons to the halogens. This causes the halogens to form negatively charged ions and the metals to become positively charged ions. The electrostatic attraction between the oppositely charged ions forms the ionic bond which forms the ionic compound.
What is an 'indicator reaction'?
---- indicators are substances which change their colour when treated with acidic or basic solutions this reaction of changing their colour is known as indicator reaction ---- ----
What forms from the reaction of bromine with acetophenone?
Toluene forms from the reaction of bromine with acetophenone.
