Imagine that have a cube of iron metal that you know has a mass of exactly 1.0000 grams because the cube was calibrated before you purchased it. You carefully measure the mass of this cube several times using the balance in your lab, but every time the balance indicates that the cube has a mass of 1.0900 grams. (i) State whether this balance be considered to be accurate, precise, both, or neither and (ii) explain how you made your choice.
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.
Imagine that have a cube of iron metal that you know has a mass of exactly 1.0000 grams because the cube was calibrated before you purchased it. You carefully measure the mass of this cube several times using the balance in your lab, but every time the balance indicates that the cube has a mass of 1.0900 grams. (i) State whether this balance be considered to be accurate, precise, both, or neither and (ii) explain how you made your choice.
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