If iodine melts at 114°C and boils at 184°C, what is its physical state at 120°C

Q: List the names of the various changes of state for a pure substance?

A: Pure substances in chemistry are those that consist of only one kind of particles. It can be further…

Q: Assume you have a 140 cm3 soil sample. The volume of the soil filled with water is 35 cm3 and the…

A: Porosity is a measure of void spaces in a material. It can be expressed as,…

Q: A substance has a definite shape and definite volume. What is the state of the substance?(a) solid…

A: The substance also called matter having fixed shape and fixed volume?

Q: When a substance changes from a liquid to a solid, which of the following is TRUE? a) b) c) The…

A: There are more attraction forces between the particles of solid than that of liquid.

Q: Evaporation of alcohol is a physical change. Select one: O True O False

A: The change is said to be a physical change if there is no change in the chemical composition of the…

Q: 11. Together, liquids and solids constitute the , phases of matter. A. compressible B. condensed C.…

A: Intermolecular forces refer to the type of interactions which are present in between atoms or…

Q: termine the state (Solid, Liquid or Gas) and the classification (Element or Compound) based on the…

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Q: Dermatologists use liquid nitrogen to freeze skin tissue. If the Celsius temperature of liquid…

A: The given data contains,  Temperature = -196°C

Q: In which of the following pairs of physical changes, are both changes endothermic?   a. freezing,…

A: The answer of the above question is given in step 2

Q: ce floats on water. For most other substances, however, the solid sinks in the liquid. Classify each…

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Q: Contrast the arrangement of particles in solids and liquids

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Q: At which temperature does water have its greatest density?

A:

Q: Write a descriptive information about Filtration and Evaporation.

A: Filtration and evaporation  are separation methods. These separation methods are used to separate…

Q: Explain the process of phase changes in matter.

A: Things around us which has mass and occupy space are called matter. Matter exists in three different…

Q: A marshmallow is toasted over a fire. It turns golden brown and caramelizes on the outside. It…

A: Physical change - Observed when there is change in the state of a chemical substance but it's…

Q: A heating curve for water has been provided below. F A G D C Time Based on this graph, answer the…

A: 1. this is an endothermic graph as on y axis the temperature is increasingand so does the graph line

Q: Solid lithium reacts with nitrogen gas to produce solid lithium nitride. Express your answer as a…

A: When solid lithium reacts with nitrogen gas to produce solid lithium nitride.i.e Lithium(s) +…

Q: Mixture of water and AMMONIUM CHLORIDE is an example of Homogeneous mixture

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Q: water boils at higher temperature under higher pressure (pure substance

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Q: The state of matter that has no definite volume or shape is Select one: Liquid Solid Liquid…

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Q: 1) Label the diagram, using the following kaywerds: melting, freezing, evaporating, condensing,…

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Q: the temperature at which table salt melts is 800 C what is the temperature

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Q: List at least three physical properties of water.

A: State three physical properties of water.

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A: The density of water decreases when it changes from liquid to solid.

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Q: is distilled water pure substance?

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Q: indicate if the temperature increase or decrease in the following matter changes: from liquid to…

A: 1. from liquid to gas 2. from liquid to solid 3. from gas to liquid 4. from solid to liquid

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Q: The changing of a liquid to a solid is called

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A: Here, we need to select which of the given option is correct for the given statement.

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Q: What is the name for a representation of the physical world? A. Alloy B. Compound C. Atom D. Model

A: By definition of alloys, compounds, atom and models of compounds.

Q: B. Complete the table below using the following terms (Solid, Liquid, Gas) Phase Change From To…

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Q: What is occurring during the flat section of the graph below on the red arrow labeled melting,…

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Q: Is dry ice pure substance?

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Q: Organisms can live on Earth because of Earth's location in the solar system. How does Earth's…

A: Answer

Q: What is the boiling point in Kelvin?

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Q: Ice naturally floats on water due to its lower density. If ice did not float on top of water,…

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Q: At certain pressures, ClF forms a solid that sublimes when heated. Using a few words  and a simple…

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Q: Using the picture of the graduated cylinder and its contents, arrange thefollowing in order of…

A: The density of a compound is the ratio of mass to its volume. The unit is gcm3

Q: Ice naturally floats on water due to its low density. If ice did not float on top of water, describe…

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Q: If iodine melts at 114 degrees C and boils at 184 degrees C, what is its physical state at 120…

A: Given: Melting point of Iodine is 114°C . Boiling point of Iodine is 184°C  To find:  Physical state…

Q: describe the types of substance present in coke float (soda with ice cream) list down 5 substances…

A: Coke float is soda with ice cream. Contain ice-cream either in soft drink or in carbonated water…

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.