CHEMISTRY QUESTIONS AND CORRECT ANSWERS ALREADY GRADED A+.

100 CHEMISTRY QUESTIONS AND
ANSWERS

-1 - ANS - Charge of a electron
\-1 - ANS - Charge of group 7 element
\-2 - ANS - Charge of group 6 element
\-3 - ANS - Charge of group 5 element
\(NH4)2 SO4 - ANS - Chemical formula for ammonium sulfate
\+1 - ANS - Charge of a proton
\+1 - ANS - Charge of group 1 element
\+2 - ANS - Charge of group 2 element
\+3 - ANS - Charge of group 3 element
\+4/-4 - ANS - Charge of group 4 element
\0 - ANS - Charge of a neutron
\0 - ANS - Charge of group 8 element
\0 - ANS - What charge must all ionic formulas add up to?
\0.04% - ANS - percentage of carbon dioxide in air
\0.9% - ANS - percentage of argon in air
\1 - ANS - Mass of a neutron
\1 - ANS - Mass of a proton
\1-100nm - ANS - size of a nano particle
\1/2000 - ANS - Mass of a electron
\21% - ANS - percentage of oxygen in air
\2Mg + O2→ 2MgO - ANS - chemical equation for magnesium burning in the air
\78% - ANS - Percentage of nitrogen in the air
\addition - ANS - type of polymerisation which occurs where a small monomer
(alkene) breaks its double bond to form a long chain
\Ag+ - ANS - Symbol for a silver ion
\Al (NO3)3 - ANS - Chemical formula for aluminium nitrate
\alkanes - ANS - which hydrocarbons have long chains with just SINGLE bonds
\Alkenes - ANS - What substance turns orange Bromine water colourless?
\alkenes - ANS - which hydrocarbons contain at least one DOUBLE bond
\aqueous solution - ANS - state the symbol (aq)
\Blue to pink - ANS - What is the observation for the cobalt chloride paper test?
\boiling - ANS - process of liquid to gas?
\cage like structures - ANS - shape of fullerenes