A student mixes some soap with water and then blows through a straw into the solution. Bubbles form. Do you think a chemical change has taken place?

Q: What are the different ways of separating mixtures? Explain the difference between chemical…

A: If a mixture is made by mixing water and sugar then the mixture maintains the properties of both…

Q: Can a chemical change result's in no new substances。?

A: Physical change: Physical change involves one phase to another phase without breaking or making the…

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: A chemist samples a river's water to measure the amount of fertilizer runoff from the area farms. In…

A: When a fixed mass of a substance is dissolved in a specified volume of the solvent results in the…

Q: What, and how does some characteristics of a good student, and how does studying chemistry help…

A: everything we do is chemistry.  Starting from cooking to sleeping , all depend upon chemical…

Q: A spilled substance in the laboratory may be left unattended/ uncleaned even after a few days. The…

A: Concept is based on laboratory:

Q: What is the difference between a physical change and a chemical change? List some examples of each.

A: Physical and chemical changes are observed in chemical reaction which gives the characteristics of a…

Q: Classify each change as physical or chemical. (a) the rusting of iron(b) the evaporation of…

A: Physical change changes the size, shape or phase of substance, Chemical change is a type of change…

Q: Which is an example of a chemical change? Steam from the boiling water condenses on the ceiling The…

A: CHEMICAL CHANGE  :- A chemical change as the name suggests, brings a change in the chernical…

Q: Your goal is to separate two solids by adding water and then filtering the mixture. What are the…

A: Filtration is process in which solid particles in a liquid or gaseous fluid are removed by the use…

Q: Environmental science is an interdisciplinary field of study. This means that.

A: Interdisciplinary field. It involves several disciplinary field. It is uses to redefine problems…

Q: Two solid objects, A and B, are both at room temperature and then placed in boiling water. The…

A: Heat capacity is the amount of energy in the form of heat,  takes for increasing the temperature of…

Q: Distinguish the difference between a coefficient and a subscript?

A: 1.Subscripts are part of the chemical formulas of the reactants and products which indicates the…

Q: What is the difference between a chemical process and a physical process in chemistry

A:

Q: 24. Which of the following observations may be used as evidence that a chemical change has taken…

A: Chemical change occurs when compound combines with other compound to form a new substance. Or…

Q: Define physical change and chemical change and give an example of each

A: Physical change is the change of one state to another without changing the chemical composition.In…

Q: Determine whether the following observation is the result of a physical or a chemical change.…

A: When we have the same composition of the compound, then the process will be physical change.

Q: What are chemicals? Give some examples.

A: Any substance which is used in or produced by any reaction to bring change or to convert one…

Q: The process in which adding a chemical compound to another chemical compound and observe physical…

A: Since we are observing physical changes only. Physical properties reflect quality of a substance.…

Q: Explain why the evaporation of water is a physical change and not a chemical change.

A: Physical change is defined as a change in the appearance of a substance only not in its chemical…

Q: What is another common situation in which a chemical change also leads to a physical change?

A:

Q: According to one theory, the pressure of a gas increases as its volume decreases because the…

A: Answer:-               Anything which is large enough to be observed with naked eyes is termed as…

Q: Can liquid nitrogen gas and liquid oxygen gas be mixed with each other?

A: In this question, we will discuss about both liquid gases are mixed to each other or not.  I will…

Q: Digesting food is an example of what? A chemical change A physical change

A: Physical change :-  In this chemical composition of the substance does not change. Involve change in…

Q: Part F In volcano vents, sulfur is converted directly from the emitted hot gases to form mounds of…

A: Deposition involves the conversion of gases directly into solids without passing through the liquid…

Q: A solid white substance A is heated strongly in the absence of air. It decomposes to form a new…

A: Given: Solid white substances is heated in the absence of ar to produce a new white substance B and…

Q: Which action happens at the microscopic scale as the temperature of a substance decreases and it…

A: Given: The temperature of the substance is decreasing and it's freezing.

Q: Classify each statement as an observation, a law, or a theory. In chemical reactions, matter is…

A: Law is a description of an observation obtained from number of experiments which supports the…

Q: Classify each change as physical or chemical.a. Sugar burns when heated in a skillet.b. Sugar…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Alcohol evaporating is an example of what? Group of answer choices A chemical change A physical…

A:

Q: Two solid objects, A and B, are both at room temperature and then placed in boiling water. The…

A: Heat capacity is amount of heat required by the object to change its temperature by degree 1.

Q: III: Sucrose is the chemical name for the sugar we consume. Its solubility at 20°C is 204 g/100 g…

A: We can easily calculate the amount of soluble sugar in the given water at that particular…

Q: In the illustration, N is color-coded as blue and H is color-coded as white. What kind of change is…

A: There are two types of changes that can occur :  Physical Changes Chemical changes Physical…

Q: Sucrose is the chemical name for the sugar we consume. Its solubility at 20°C is 204 g/100 g water,…

A:

Q: Imagine a world in which all the elements existed, but they couldn't form any chemical bonds with…

A:

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: 1. The study of the amounts or reactants used, and products formed from a chemical reaction is…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Is distillation a good method for separating a mixture of water and hexane?  Why or why not?

A: distillation, process involving the conversion of a liquid into vapour that is subsequently…

Q: A Kool-aid solution has sugar and flavoring as the solute and water as the solvent. If ice cubes of…

A: Solvent is water solute is sugar Effect of melting of ice on sugar molecules = ?

Q: True or False When a physical change occurs,  a change in state occurs which indicates that a new…

A: In a physical reaction the property of the component ramains same as before the reaction. e.g. Ice…

Q: When large pieces of a purple-black crystalline solid are gently heated, a purple vapor is formed…

A: Solution : Change is defined as the process that shows the change in state, shape, color, shape,…

Q: What is wrong with the following statement? "The results of the experriment do not agree with the…

A: There are some experiments who's value comes near to the true value or the theoretical value.

Q: 1. Which of the following is not a step in preparing a water sample container? a. All sample…

A: Option a is the correct answer. Steps in preparing a water sample container: Decide on the number of…

Q: During the production of pure iron, limestone and coke are used. What are their purposes? (Inorganic…

A:

Q: 2. You wanted to give drinks to your visitors, your classmates, by mixing a jar of water and a 500…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Why is chemical theory successful? What are some of the limitations of the theory?

A: The chemical theory describes the physical phenomena which give rise to chemistry as well as the…

Q: During a laboratory experiment, a student mixed two homogeneous aqueous solutions.  After mixing a…

A: Since the solution is having a precipitate in it. Hence we want to separate the solid from liquid.

Q: Choose Physical or Chemical Change to describe the changed described. A few grams of sucrose (table…

A: Physical change: Physical changes is the change of the appearance of a substance, not its chemical…

Q: Part IV Cabbage Juice Indicator Chop cabbage into small pieces until you have about 2 cups of…

A: A physical change is one which is reversible in nature i.e. once the change has occurred it can be…

Q: A change in phase may occur when the energy of the particles is changed. ABSORPTION of energy will…

A: Please find your solution below : The answer is False. The capitalised words do not make the…

Introduction to chemistry

Chemistry is a branch of science that deals with the analysis of material and the substances that comprise it. It also manages the properties of these substances and their reactions to form new substances. It is basically centered on particles and atoms that make up components and mixtures. These chemical species will in general connect using bonds.