5. Hydrogen chloride is decomposed by an electric current to hydrogen (H2) and chlorine (Cl2). Is hydrogen chloride homoatomic or heteroatomic. Why? A sentence or two of explanation.

Q: ASSERTION: The solubility of all gases in water decreases with the rise in temperature. REASON: The…

A: The solubility of gases in water is inversely proportional to temperature because if the temperature…

Q: What is a mixture? A. A solid gold ring B. Nitrogen and oxygen in a molecule C. Copper and lead…

A: A mixture is an homogeneous or heterogeneous solution in which different substances are present in…

Q: What does salinity mean? O A. A measurement of the amount of floating particles in fresh water. O B.…

A: Salinity : it is also known as saltiness. It is defined as amount of salt dissolved in a water body…

Q: = a homogenous mixture s be made of liquid com

A: (7) What is a pure substance that is only made of the type of atom –  (A) Element → Element is a…

Q: In the following diagrams, the different colored spheres represent atoms of different elements.…

A: The most appropriate diagram has to be selected for each situation.

Q: 114. Classify each as a pure substance or a mixture. If it is a pure substance, classify it as an…

A: An element is the simplest type of substance comprising of a single type of matter.  A compound is…

Q: 14. A researcher finds that a solid has high melting and boiling points, and is soluble in water.…

A: Ionic compound is a chemical compound composed of ions held together by electrostatic forces termed…

Q: Match each term on the left with the most appropriate description on the right. Ku (a) pure…

A: Since the solution is formed from the two compositions solute and solvent.

Q: Which substance can be separated by filtration?  A. Compound B. Element C. Mixture D. Solution

A: Matter exhibits two types of property:  Physical and chemical

Q: Air is homogeneous because * A: there is not blue air nor red air. B: it is a gas. C: the…

A: When two or more compounds come into contact without undergoing a chemical change, a mixture is…

Q: This is an experimental set-up for the purification of water experiment. State uses of each labeled…

A: We are given the complete setup of a distillation apparatus for the purification with labelling of…

Q: Which of the following statements is(are) true? a. A spoonful of sugar is a mixture.b. Only elements…

A: The statements, which are all true has to be given.

Q: This image represents a particulate view of a sample of matter. Classify the sample according to its…

A: In chemistry, the matter can be classified as pure substance or a mixture depending upon its…

Q: Which hypothesis describes the behavior of molecules when a substance changes from a gas to a…

A: When a solid substance is heated then it transfers to its liquid state. If the liquid state is…

Q: 2. Homogeneous mixtures(s) A. distilled water B. gasoline C. sandy water D. copper turnings + iron…

A: A. distilled water is a pure substance, not a homogeneous mixture. B. gasoline is homogeneous…

Q: Fact, Law, Hypothesis, or Theory? __ An object less dense than the air flies up on its own. __…

A: Factt: It is known or proved to be true. Law: A scientific law is the description of an observed…

Q: 20. An object with a mass of 6.3 kg has a force of 7.1 newtons applied to it. What is the resulting…

A: The answers of the above questions are given in following steps.

Q: 13 What occurs within the beaker as the teacher mixes the vinegar and milk? A A chemical change that…

A: Multiple choice questions are answered with explanation.

Q: Gasoline is composed of a variety of different liquid hydrocarbons, which do not separate as time…

A: Gasoline is composed of a variety of different liquid hydrocarbons. These hydrocarbon does not…

Q: 12. Distinguish between filtration and centrifugation.

A: The main difference between strategies is the type of power used and the method of separation used.…

Q: 1. What pieces of apparatus or equipment are used for measuring: a. Temperature? b. Small amount of…

A: (1) (a) Temperature is measurement of coldness and hotness of a Substance. Usually heat always flow…

Q: Seawater is composed of salt, sand, and water. Is seawater a heterogeneous or homogeneous mixture?…

A: Homogenous mixture is a mixture in which the components of the solution are uniformly distributed…

Q: Consider the following separations of materials. State whether a physical process or a chemical…

A: Physical changes are those process which do not give a new product usually these are reversible…

Q: We are doing an experiment on measuring the temperature. We are to measure the temperature of hot…

A: The experiment you are conducting involves measuring the temperature of hot water and water with…

Q: 1. Complete the table: Element Physical State Color Luster iron sulfur mercury magnesium

A: The physical state of an element depends on inter atomic forces. The colour and luster of the…

Q: 1. Metal Ore a. element b.compound c. mixture   2.  Grinding dried leaves into a fine powder…

A: We have to classify metal ore and type of change occuring on grinding leaves.

Q: 1) State your interpretation of the meaning of the slope for the first graph you prepared of Volume…

A: A question based on tools in analytical chemistry that is to be accomplished.

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.