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 DIAGRAM below contains FIVE PURE SUBSTANCES with the molecular component
shown per substance. Using this DIAGRAM answer the questions.
1. Which substance CANNOT decolorize bromine water?
Substance A
Substance B
Substance C
Substance D
2. Which substance is expected to turn blue litmus paper into red color?
Substance A
Substance B
Substance C
Substance D
3. Which substance has the greatest tendency to participate in a
reaction
Substance A
Substance B
Substance D
Substance E
4. Which substance has the highest solubility to hexadecane?
Substance A
Substance C
Substance D
Substance E
5. Which substances can react with potassium borohydride, converting the
product into
Substance A and B
Substance B and D
Substance C and D
Substance D and E
6. Aside from London dispersion forces, which substance do you expect dipole
interactions to be effective?
Substance A and B
Substance B and D
Substance A and C
Substance B and E
7. Which substance is expected to have the lowest boiling point?
Substance A
Substance C
Substance D
Substance E
8. The presence of trans pi bonds can influence molecular stacking due to the
limitation of bond rotation. Based on this information, which substance is
characterized by molecules that have effective molecular stacking?
Substance B
Substance C
Substance D
Substance E
9. The physical properties of the substances are influenced by intermolecular
forces of attraction. Which substance(s) are predominantly influenced by the
intermolecular association of the molecules via hydrogen bonding?
Substance A only
Substance A and C
Substance A, B, and C
Substance A, B, C, and D
10. Which substance will exhibit the lowest melting point?
Substance A
Substance B
Substance D
Substance E
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