Definitions
It’s secret
Questions I can’t categorize
Polyatomic Ions
5th Category
100

Temperature 

The average kinetic energy of the particles the particles of a substance

100

balance this\

CaCO+ 2HCl -> CaCl2 + H2O + CO2

It’s already balanced dummy

100

What is E reactants equal to

E released

100
what is the formula for sulphate 

SO42-

100

Which element is Ni

Nickel

200

Activation energy

The minimum energy required to start a chemical reaction

200

what is the molar volume constant?

22,4 dm3 . mol-1

200

What is required for an endothermic reaction to occur

Energy absorbed is greater than energy released

200

What is the formula for Nitrate 

NO3-

200

Which element is Li

Lithium

300

Bond Energy

The amount of energy required to break a bond in one mole of the molecules in which the bond is formed 

300

Balance this

Na2CO3+ HCl -> NaCl + H2O + CO2

Na2CO3+ 2HCl -> 2NaCl + H2O + CO2

300

What is Eproducts?

Eabsorbed

300

What is the formula for dichromate

Cr2O72-

300

Which element is Mn

Manganese

400

Catalyst

A substance that increases the rate of reaction but remains unchanged at the end of the reaction

400

What is avagadros constant

6,02x1023

400

Whit is required for an exothermic reaction

E released is greater than E absorbed

400

What is the formula for Hydrogen Carbonate?

HCO3-

400

Which element is Ar

Argon

500

Activated complex

A high energy, unstable, temporary transition state between the reactants and the products

500

What is relative atomic mass equal to?

Molar mass

500

What type of reaction will make the environment around it hotter?

Exothermic

500

What is the formula for Ethanoate

CH3COO-

500

Which element is Se

Selenium