Indicate whether each of the following samples of matter is a heterogeneous mixture, a homogeneous mixture, a compound, or an element. 1. a blue-colored, single-phase liquid that when boiled away (evaporated) leaves behind a solid residue a. heterogeneous mixture b. element c. compound d. homogeneous mixture 2. a "cloudy" liquid that separates into two layers upon standing overnight a. heterogeneous mixture b. element c. compound d. homogeneous mixture 3. a nonuniform, white crystalline substance, part of which dissolves in alcohol and part of which does not dissolve in alcohol a. heterogeneous mixture b. element c. compound d. homogeneous mixture 4. a colorless gas that cannot be separated into simpler substances using physical means and that reacts with the metal a. heterogeneous mixture b. element c. compound d. homogeneous mixture
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.
Indicate whether each of the following samples of matter is a heterogeneous mixture, a homogeneous mixture, a compound, or an element.
1. a blue-colored, single-phase liquid that when boiled away (evaporated) leaves behind a solid residue
a. heterogeneous mixture
b. element
c. compound
d. homogeneous mixture
2. a "cloudy" liquid that separates into two layers upon standing overnight
a. heterogeneous mixture
b. element
c. compound
d. homogeneous mixture
3. a nonuniform, white crystalline substance, part of which dissolves in alcohol and part of which does not dissolve in alcohol
a. heterogeneous mixture
b. element
c. compound
d. homogeneous mixture
4. a colorless gas that cannot be separated into simpler substances using physical means and that reacts with the metal
a. heterogeneous mixture
b. element
c. compound
d. homogeneous mixture
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