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

Q: suppose of magnesium filings and a teaspoon of powdered sulfur are placed together in a metal…

A: Pure substances are composed of only 1 type of element, molecule.

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: 1. What is physical change? A chemical change?|

A: As you didn't asked for a particular question number I'm giving you answer of first question. Please…

Q: Which of the following is a chemical change? Explain your reasoning: (a) boiling canned soup; (b)…

A: The chemical change of the reaction has to be given,

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: Provide examples of physical change and chemical changes and how you could tell.

A: Physical change :  A physical change is defined as the change which do not change composition of…

Q: What are( chemicals properties ,physical properties) explain using example.

A: Physical properties = Physical properties are the physical appearance of the compound without…

Q: (1.4)Which of the following is a chemical change? O cutting papers O rusting iron O breaking glasses…

A: Physical changes are the changes in physical properties of a substance. They are generally…

Q: Which is not a clue that could indicate a chemical change? O Change in color O Change in shape O…

A: Change in shape don't indicate the chemical change .

Q: define mixture and distinguish between mixtures andcompounds;

A: A mixture is a combination of two or more substances that can be mixed together in any proportion.…

Q: Physical changes in matter occur. Matter keepsit changes in matter are_ characteriistics, but…

A: Answer: There are two types of changes that can occur in matter: 1. Physical change 2. Chemical…

Q: What is the fundamental difference between a chemical change and a physical change? A new substance…

A: Chemical Change : A change where the properties of the substance undergoing the change is completely…

Q: Which of the following steps in an overall process involve( s) a physical change and which…

A: Physical change: These are the reversible changes that clarify the physical property of sample.…

Q: Give an example of a chemical change, and explain what evidence supports that it is a chemical…

A:

Q: Which element or elements are present in the unknown mixture?

A: flame atomic emission spectra or flame photometry Flame photometry based on measurement of intensity…

Q: The reactions which consume energy and change kinetic energy into chemical energy are said to be?

A: The reactions which consume energy in a chemical reaction are called endothermic reactions. This…

Q: Which one below represents a chemical change?

A: The question is based on the concept of general chemistry. there are basically two types of change…

Q: Which is an example of a physical change?

A: Physical change can be defined as the change in the physical form of the substance without any…

Q: Classify the following materials as substances or mixtures: absolute (pure) alcohol, milk (as…

A: A material can be classified as mixture or substance depending on their properties. The material…

Q: Mars is red due to red soil rich in iron oxide (rust).  Is the oxidation of soil to rust a PHYSICAL…

A:

Q: When calcium hydroxide and sulfuric acid are combined, calcium sulfate and water are formed is this…

A: A chemical change occurs when the molecular composition is completely altered and a new product is…

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

A:

Q: What is the difference between a physical and chemical change? Give at least three signs of a…

A: Difference  between  chemical  change  and  physical  change.  Physical change is a type of change…

Q: The tap water found in many areas of the United States leaveswhite deposits when it evaporates. Is…

A:

Q: A chemical change results from a chemical reaction, while a physical change is when matter changes…

A: This is the concept of chemical and physical changes.

Q: What is the substance undergoing a chemical or physical change known as?

A: A substance undergoing a physical or chemical change known as reactant. reactant is the substance…

Q: You might have noticed that while eating icecream on a hot day, some of the ice cream begins tomelt.…

A: Is the observed change in the state of the ice creama physical or a chemical change? Justify your…

Q: Judge the following statements as true or false. If you believea statement to be false, provide a…

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

Q: Describe the difference between a physical change and a chemical change.

A: A physical change is a change in which some properties of the substance change, but its identity…

Q: What is Heterogeneous substance? Give an example?

A: A mixture is a material made up of two or more different substances which are not chemically…

Q: Is the decomposition of copper(II) sulfate hydrate a physical change or a chemical change? Explain.

A: Given: Decomposition of copper (II) sulfate hydrate i.e. CuSO4·5H2O.

Q: What kind of change is ripping a piece of paper towel from the roll, and what kind of change is…

A: Ripping a piece of paper towel from the roll is a physical change as here the piece of paper is…

Q: How are the properties of a compound related to those of the elements that comprise it?

A: A compound is a material formed by chemically bonding two or more elements.  In any compound,…

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: During a chemical change: A. Chemical composition changes  B. There is only a physical state change…

A: During a chemical change A. Chemical Composition changes

Q: What is the difference between a physical change and a chemical change?

A: The difference between physical and chemical change are given by

Q: In what state of matter is carbon dioxide normally found on earth.

A: Matter is anything and everything that occupies space and whose mass is not zero. Generally…

Q: What states and properties of matter does a meteor have? - describe the types of changes that matter…

A: Meteors are space rock, generally made up with silicon and oxygen. There are many types of meteors-…

Q: is maple syrup a homogeneous or heterogeneous mixture

A: 1)HOMOGENOUS MIXTURE:-  A mixture which has uniform composition and appearance throughout the…

Q: Burning paper is a chemical change.

A: Chemical change is in which chemical composition is changed of the compound.

Q: The explosion during fireworks is a chemical change. Select one: True False

A: The given statement is : The explosion during fireworks are chemical change.

Q: 2) What evidence indicates that new substances with different properties are formed during chemical…

A: Evidences that indicates that new substance with different properties formed during chemical…

Q: Is the following a chemical change, physical change or both? Explain. the ability to digest food

A:

Q: Which change can be easily reversed? O Chemical Change O Physical Change O Both a physical and…

A: A physical change happens when a compound undergoes changes in physical properties like color…

Q: Which f the following is an example of chemical change? O Filling up a balloon with hot air. O…

A: Chemical change is a process which results when a substance combines with another substance to form…

Q: Which of the following changes is considered a chemical change? O a. Dissolving of sugar in water. O…

A: Given processes: Dissolving of sugar in water Crushing rock salt Evaporation of alcohol Melting of…

Q: Classify the following materials as substances or mixtures:table salt, wood, mercury, air, water,…

A: Substances- these are the materials which have stable composition and properties throughout and can…

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.