Which one below represents a chemical change?

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: Which of the following is not a chemical change? A. burning coal B. making bread rise using baking…

A: A chemical change is a change in which the initial compound is having different structure or formula…

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

A: Photochemical reactions are those reactions which involved the consumption of light energy. Then the…

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: chemical and physical changes

A: The difference between physical and chemical changes in a reaction is as follows.

Q: Identify two forms of energy that are involved in each of the following energy conversions relating…

A: Energy can neither be created nor destroyed. They can only be converted from one form to another.

Q: Is this a chemical or physical change? List your reasons

A: When calcium metal , which has a silver color is heated with oxygen gas it gives calcium oxide as a…

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

A: A physical change is a process which involves a substance changing its form or state and but its…

Q: Classify Matter According to Its Composition: Elements ?

A: ANSWER IS :

Q: Rank the physical and chemical changes in order of decreasing of the amount of energy released: (a)…

A: If the quantity of water that is condensed in and subsequently precipitated from a cloud is known,…

Q: . When table salt is placed in water and stirred it dissolves and a clear liquid is obtained. This…

A: On the basis of changes; all processes can be classified as physical change and chemical change. The…

Q: A chemical change

A: Chemical changes occurs when a substance reacts with another substance which results in the…

Q: 19. When limestone is subjected to high heat, it becomes calcium oxide and releases carbon dioxide…

A: Using combustion reaction of wood it is observed that it is similar to decomposition of limestone.

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: Which of the following is not a physical change? physical state color boiling point bleaching…

A: Physical change - A physical change is a change which affects the form of the chemical substance…

Q: Classify each of the changes as a physical change or a chemical change.

A: Physical changes are the ones that are the ones do not involve any chemical reactions,i.e. the…

Q: carving wood slicing an apple burning woodtearing aluminum fol bleaching skin snow melting frying an…

A: A chemical change occurs when two substances on combining bring about to form new substance. Which…

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

A:

Q: Which of the following represent a chemical change? Which of the following represents a physical…

A: We are to discuss which of gives changes are physical and chemical changes.

Q: What are four observations used to indicate a chemical change?

A:

Q: Dissolving suger is an example of-(a) Physical change(b) Chemical change(c) Redox Reaction(d) None…

A: Physical change: Changes in only size, shape, state or appearance of a substance not in a chemical…

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: State the difference between physical and chemical changes

A:

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

A:

Q: Which of the following is a physical change?   a. Ice melting into liquid water   b. Sodium…

A: Physical changes are changes affecting the form of a chemical substance, but not its chemical…

Q: A sample of liquid benzene is heated until it boils; is this a chemical change true of false?

A:

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

A:

Q: Describe the results of a physical change and list three examples of physicalchange.

A: In a physical change, the composition of the substance doesn't change. The identity of the substance…

Q: Is gas escaping from an opened soft drink anexample of a chemical or a physical change? Explain.

A: In physical change there are no new substance created. Easy physical techniques may be used to…

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: How do I know the difference between physical and chemical changes?

A:

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: Changing hydrogen and oxygen into water is a .... a. chemical change b. physical change c. double…

A: When a chemical change takes place bond between atom breaks and new bond forms. Thus when water is…

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

A:

Q: 19. When limestone is subjected to high heat, it becomes calcium oxide and releases carbon dioxide…

A: The heating of limestone is a chemical change;The limestone decomposes into two other substances,…

Q: 1. Which of the following is an example that includes evidence of a chemical change? *

A: 1.Elementary zinc does not react with water molecules. The ion does form a protective,…

Q: the kinetic energy of particles

A: The kinetic energy of the Gas is greater than the kinetics of liquid, greater is the kinetic energy…

Q: give one example of a physical change a chemical change

A:

Q: List four indicators that a chemical change has probably occured.

A: The changes which are not reversible and new substances or products are formed which posses…

Q: A student pours sodium chloride into a beaker of water and stirs it well. The sodium chloride is no…

A:

Q: An iron nail rusting is an example of a change.

A: Rusting : A process in which iron turns into its oxide that is iron oxide.  Rusting occurs when iron…

Q: What are the properties of Chemical changes?

A:

Q: Which of the following is NOTA chemical change? O a. bicycle rusting O b. antacid neutralizes…

A:

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: A block of iron forming a pool of the liquid metal is correctly classified as A) Chemical change…

A: Physical change : is the change of matter that occurs without change of the chemical composition. It…

Q: Is the process of bananas ripening a chemical change or a physical change? Explain.

A: A Physical change is defined as a change that results in a change in the physical appearance of the…

Q: Burning paper is a chemical change.

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

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

A:

Q: Define physical change and list several common physical changes.

A: There are two types of change in matter; physical change and chemical change.

Q: Changing hydrogen and oxygen into water is a chemical change none of these conservation reaction…

A: The process by which the convertion of hydrogen and oxygen into water has to be given.

Q: What are the properties of physical changes

A: Physical change is the change in physical state of the substance.

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 would be considered a chemical change? O ice melting O water flowing O iron…

A:

Q: Which one of the following is not a chemical change ?     A. Burning of coal in airB. Fermentation…

A: A chemical change is a change of one substance to another one or more substance via a chemical…

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…

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.