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.
![1) In this experiment, you will be mixing aqueous solutions of sodium carbonate and calcium chloride to produce solid calcium
carbonate.
Na»CO3(ag) + CaCl,(aq) → 2 NaCI(aq) + CaCO3(s)
Order the steps required to predict the volume (in mL) of 0.200 M sodium carbonate needed to produce 2.00 g of calcium
carbonate. There is an excess of calcium chloride.
Step 1
Choose match
Choose match
Convert mass of calcium carbonate to moles of calcium carbonate
Convert the volume of sodium carbonate solution required from liters to milliliters
Compute the volume of sodium carbonate solution required
Compare moles of calcium carbonate to moles of sodium carbonate based on balanced equation to calculate moles of sodium carbonate required
Sttps
Choose match
Step 4
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