Which of the following is not a chemical change? A. burning coal B. making bread rise using baking soda C. boiling an egg D. boiling water

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: 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: What are the three states of matter?

A: The three states of matter have to be defined.

Q: The study of energy changes that accompany chemical and physical changes is known as? Select one: a.…

A: It is not definition of physical chemistry because it is interactions and transformations of…

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: (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: A chemical change

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

Q: he energy change?

A:

Q: following reactions as homogeneous or heterogene

A: Homogenous reactions include the reactants and products in the same phase. Heterogeneous reactions…

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: heat (in joules

A:

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

A:

Q: What are chemicals

A: Chemicals are those Substances which are used in any Chemical Reaction or process or those…

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

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Q: 2. How much heat is lost when a 640 g piece of copper cools from 375 °C, to 26

A: When a solid substance is cooling then heat is lost . It can be determined by the following formula-…

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: 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 each change as physical or chemical. The liquid propane in a gas grill evaporates because…

A: Physical change:  When a substance undergo changes like in shape, color, phase, state etc. without…

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

A:

Q: The boiling of water is aa. physical change because the water disappears.physical change because the…

A: The boiling of water is a physical or chemical change. (a) physical change because the water…

Q: Which type of energy is stored in fuels?

A: A fuel is substance that can be made to react with other substances so that it releases energy in…

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?

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Q: Combining hydrogen gas and oxygen gas to form water is a O chemical change. O physical change.…

A: Combination of H2(g) & O2(g) is which type of reaction ??

Q: In a solar box cooker sunlight falls on the and the food gets cooked by absorbing heat energy.

A: Mirror is used in a solar cooker to increase the radiation input on the absorbing space and is fixed…

Q: Caco, solid was grind then heated to decompose to carbon dioxide and calcium oxide. The change/s…

A: Physical Change: It is a process in which a substance undergoes changes in its physical form but not…

Q: 18. Based on the molecular diagram, classify each change as physical or chemical. b. C.

A: Physical changes are changes under which a substance undergoes a change in its physical properties.…

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: Classify the following quantities if extensive or intensive property: 4 a.) Temperature b.) Mass c.)…

A: Given quantities: a) Temperature b) Mass c) Weight d) Volume We have to classify these quantities as…

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: List three of the five changes in the properties of matter than can occur during a chemical…

A: During a chemical reaction, many changes occurs

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: 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: 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: 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: 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: 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: 1. When steam condenses, A. A physical change occurs. B. A chemical change occurs. C. Both physical…

A: When steam condenses a physical change occurs.

Q: What are the properties of Chemical changes?

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

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Q: f you put salt water in an open container under the sun, the water evaporates leaving the salt…

A: ANSWERE IS DISCUSSED BELOW :

Q: what is the definition of a single replacement

A: • The chemical reaction in which one element takes the place of another element in a compound is…

Q: Burning paper is a chemical change.

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

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: Crushing an empty water bottle is a chemical change. Select one: O True O False

A: Crushing a bottle is a physical change. In this change Only shape of the bottle change and there is…

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: 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…

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.