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.
The specific heat of ice is 2.06 J/g°C. Calculate how much energy is needed to heat a 52.0 gram sample of ice from -20.0 to 0.0°C
The amount of heat energy required to raise the temperature of a substance can be calculated using the formula
Q =
Where, Cp is the specific heat
m= mass of the substance
dT = the difference in temperature
Given, Cp =2.06 J/g C, m= 52.0 g, Ti =-20 C, Tf =0 C
Therefore,
Q = =
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