Use the change of state interactive to answer the questions. Using the phase change graph, identify the melting point and the boiling point of this substance. 100 90 so 70 60 50 40 30 20 10 10 20 Heat (kJ) melting point: °C boiling point: °C Temperature ("C)

Q: 3. The normal melting point of ice (solid water) is 0.0°C. When the solid ice melts into liquid…

A: Ice, water and water vapor are the three different states of water. By changing the temperature, one…

Q: hy was it important to perform several tests on the unknown solid? Opifferent tests allow you to…

A: A question based on the properties of solids. From the 4 given options, the most appropriate option…

Q: Classify these substances. More than one answer may apply in each case. N2 solution O homogeneous…

A: Element - It is a pure substance made up of only a single atom.  Compound - It is a pure substance…

Q: Please help with question 3 parts I-IV and part b

A: A question based on phase diagram that is to be accomplished.

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A: This due to the surface tension, cohesive force and adhesive force. Surface tension is the tendency…

Q: Decide which element probably has a melting point most and least similar to the melting point of…

A: Answer:Temperature at which melting of solid substance into liquid form takes place is called its…

Q: 2. A student has a sample of water at 36.0°C and they add some ice, which melts. After the ice…

A: A pictogram is a diagrammatic representation of the given condition or procedure. Here, in the given…

Q: Solid zinc metal reacts with ssulfuric acid to form hydrogen gas and an aqueous solution of zinc…

A:

Q: Part A) 70 ∘C Express your answer to four significant figures and include the appropriate units.…

A: CONCEPT 1 mmHg = 0.00131579 atm

Q: Determine the mass of the water in the sample based on the following data to two decimal places…

A: Determine the mass of water sample in the sample --

Q: Use the heating-cooling curve below to answer the following questions. 160 Temperature (°C) 110l A…

A: Answer: This question is based on the pattern of change in temperature when heat is added to the…

Q: 8. The physical state in which matter is not hard to compress is: A) solid B) liquid C) gas

A: The correct answer is: gas ---> option(C)

Q: What unknown solid sample has a melting point range between 119 degrees celsius to 122 degrees…

A: Benzoic acid is a white crystalline solid with a melting point of 122oC. So if the range of melting…

Q: Define the phases of matter and phase change?

A: The state of matter that is uniform throughout in physical state and chemical composition is known…

Q: Pls pls help me solve the given questiuon, explain and make sure everything is correct 100% thanks

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Q: 5. Identify each of the following changes of state as melting, freezing, or sublimation. a. Dry ice…

A: The correct answer is given below

Q: 228882 120 110 100 90 TEMPERATURE 80 70 60 2889 10 0 -10 -20 LEG 8 LEGA 100 Leg B Leg A Leg C Leg E…

A: A heating curve is plotted between temperature vs heat of a substance, it  represents the phase…

Q: Match each substance with the correct categorization. Consider a cup or handful size sample of the…

A: Here we have to identify whether the following given matter are element, compounds , homogeneous…

Q: Celsius scale water freezes On the Celsius scale, water freezes at 32 degrees. True or False True…

A: Given statement is true or false ?

Q: Gas Liquid Solid Use the image above to match the number to the correct phase change condensation…

A: The correct phase change has to be matched with the respective numbers.

Q: The boiling point of hydrogen is -253 oC. What is this temperature in Kelvin? -20 K…

A: In this question, we have to to do conversion of boiling point of hydrogen -253°C into Kelvin unit.

Q: IF YOU WANT A PURE SUBSTANCE SEPARATED FROM IMPURITIES, WHICH SETUP WOULD YOU USE Heat IMPURE LIQUID…

A: We have to tell among the given options which one is used to separate a pure substance from a…

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.