States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
A. Write a balanced chemical equation, total ionic equation and net ionic equation for the given
pairs of salt solutions when they are mixed.
- Pb(NO3)2 + K2SO4 →
- FeCl3 + NaOH →
B. For the precipitate formed in question A, write its formula, chemical name and classification.
Follow this format in writing your answer in the reply box:
A. Precipitation Reaction
Balanced Equation:
Total ionic Equation:
Net Ionic Equation:
B. Precipitate Formula - chemical name - classification
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