4. When a substance in its liquid state undergoes a decrease in kinetic energy a) it may melt the intermolecular forces will decrease it may solidify d) it may evaporate

Q: How much heat is necessary to melt 12.8 g of solid gold? The heat of fusion of gold is 15.3 cal/g.

A: Given,mass of the solid gold = 12.8 gThe heat of fusion of gold = 15.3 cal/g

Q: Given that a 10.0 g sample of ice at 0.0 °C melts and then the resultant water proceeds to warm to…

A:

Q: Which of the intermolecular forces BEST explains the unusual behavior of water in that it has a…

A:

Q: When a solid forms from a liquid of the same nature, we call it: A) melting B) fusion C) dissolution…

A: When a liquid loose its energy or energy is released then it will convert into solid.

Q: How many kilojoules of heat energy are required to melt 200. g of ice at its freezing point?

A:

Q: Which phase change is an endothermic process? a) evaporation O b) deposition Oc) freezing

A: The energy difference between the products and reactants is known as the energy change of a…

Q: Intermolecular forces are weaker than intramolecular bonds. O True O False

A:

Q: one gram of gas to liquid

A:

Q: Question 11 Intramolecular forces primarily impact the chemical properties of substances or impact…

A: There are two types of forces. 1. Intra molecular forces 2. Inter molecular forces   Intra molecular…

Q: 4.What is the name of a phase change between a solid to a liquid?  a freezing  b evaporation  c…

A: melting  Option "d" is correct.

Q: Acetone has a vapor pressure of 187 torr at 20°C. It freezes at -95°C, and boils at 56°C. Based on…

A:

Q: 4.  Match the following physical change with the correct phase transition label.   Question…

A: The objective of the question is to match the given physical changes with the correct phase…

Q: How much heat is necessary to melt 12.8 g of solid gold? The heat of fusion of gold is 15.3 cal/g.

A: The objective of the question is to calculate the amount of heat required to melt 12.8 g of solid…

Q: A heating curve for the compound "benzene" is shown.  Which regions of the heating curve are where…

A: The heating curve generally has five stages, it shows us how a substance changes its state from…

Q: Find a molecule (something with covalent bonds) and determine its melting and boiling point.  Draw…

A: A molecule with covalent bonds and melting and boiling point has to be given. The lewis structure of…

Q: Finding the equilibrium temperature when substances at different temperatures mix

A: Mass of cream = 9.0 g Mass of coffee = 150.0 g  Temperature of cream = 12.7˚C Temperature of coffee…

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.