13. Why is the boiling point of methane (CH4) much lower than the hydrogen fluoride (HF) ? Because A. CH is more polar B. of hydrogen bonding in HF C. of ion-dipole interactions in HF abscc solod slgtuM 11 pOTIO S ot abnoqeono tr 1otol orit szoorl notosi D. of dipole-dipole interaction in CH4 s 2oloineg gs 2 iodi ud omolov bns eec de boxn overd ebiloe omo bsdn ai biloe lo sqyt 1edWanate.oniomoss lugen ebilo2 onillete A abilo2 euodgiomA 14. Which statement is true about water? A. It exhibits hydrogen bonding B. It dissolves nonpolar compounds C. Its solid phase is denser than its liquid phase T at einomotte uiwollot odi to doulW D. A, B& C mbnaqsb cotara mestlib ors 1o lie n aixo-o onetedua A 15. Which of the following phases of water exist at its triple point? ixo ne socdue A A. gas and liquid B. liquid and solid C. gas, liquid, and solid D. liquid, solid and supercritical liquid Gob. bu DVnparu curberamus aug bueane to lis ni tei7s tonns oonsedue A woilot of T

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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.