In determining the density of a rectangular wooden block, use the information in the table below and the formula to fill in the empty boxes. (Apply the uncertainty rule) Volume of wooden block (cm3) = Length (cm) x Width (cm) x Thickness (cm) Mass (g) of wooden block (g) 20.5g Length of wooden block (cm) 5.00cm Width of wooden block (cm) 5.00cm Thickness of wooden block (cm) 1.00 cm Volume of wooden block (cm3) Density of wooden block (g/cm3) d = m/v
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.
In determining the density of a rectangular wooden block, use the information in the table below and the formula to fill in the empty boxes. (Apply the uncertainty rule)
Volume of wooden block (cm3) = Length (cm) x Width (cm) x Thickness (cm)
|
Mass (g) of wooden block (g) |
20.5g |
|
Length of wooden block (cm) |
5.00cm |
|
Width of wooden block (cm) |
5.00cm |
|
Thickness of wooden block (cm) |
1.00 cm |
|
Volume of wooden block (cm3) |
|
|
Density of wooden block (g/cm3) d = m/v |
|
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