Musical instruments like trumpets and trombones are madefrom an alloy called brass. Brass is composed of copper andzinc atoms and appears homogeneous under an optical microscope.The approximate composition of most brass objectsis a 2:1 ratio of copper to zinc atoms, but the exact ratio variessomewhat from one piece of brass to another. (a) Wouldyou classify brass as an element, a compound, a homogeneousmixture, or a heterogeneous mixture? (b) Would it be correctto say that brass is a solution? [Section 1.2]
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.
Musical instruments like trumpets and trombones are made
from an alloy called brass. Brass is composed of copper and
zinc atoms and appears homogeneous under an optical microscope.
The approximate composition of most brass objects
is a 2:1 ratio of copper to zinc atoms, but the exact ratio varies
somewhat from one piece of brass to another. (a) Wouldyou classify brass as an element, a compound, a homogeneous
mixture, or a heterogeneous mixture? (b) Would it be correct
to say that brass is a solution? [Section 1.2]
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