Which of these changes are physical and which are chemical? Explain.(a) Plants make sugar from carbon dioxide and water.

Q: Classify each of the following as a physical change or a chemical change. For each chemical change,…

A: Physical change is the rearrangement of the molecules ( composition remains same) In Chemical change…

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: The following statements pertain to the development of the theory of combustion by the French…

A: Given: (a) A metal is burned in a closed container, and the change in mass of the solid and volume…

Q: 48. Are these data sets on chemical changes consistent with the law of conservation of mass?(a) A…

A: The law of conservation states that for an isolated system the mass can neither be created nor be…

Q: 42. Classify each change as physical or chemical.(a) Sugar dissolves in hot water.(b) Sugar burns in…

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

Q: Define physical change and chemical change. State which type of change occurs in each of the…

A: Physical change is the type of change which involves change in the physical appearance of a…

Q: Classify each property as physical or chemical. (a) the tendency of copper to turn green when…

A: Chemistry is the branch of science which deals chemicals, the chemical behavior of matter and the…

Q: (a) Under one set of conditions, the substances in A and B mix, and the result is depicted in C.…

A: To find: Whether the following changes are physical or chemical.

Q: Classify each property as physical or chemical. (a) the tendency for platinum jewelry to scratch…

A: ANSWER

Q: Classify each of the following as a physical change or a chemical change. (a) Touching a lit candle…

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

Q: PART 2 Density of Gravel 0010 The mass of the empty weighing boat was measured. Then the weighing…

A: Density of a substance is defined as mass per unit volume. It is denoted as d or ρ. S.I unit of…

Q: 7. State whether each of the following represents a chemical change or merely a physical change: (a)…

A: Physical change :  Physical change is defined as change in physical properties i.e. shape ,size ,…

Q: 5 Water is evaporated from the magnesium chloride solution. The resulting solid is melted at 700°C…

A: Solution-  As water is evaporated through magnesium chloride solution and resulting solid is melted…

Q: Define physical propertyand chemical property.Identify each type of property in the following…

A: Any visible change or measurable change in the substance can be called as physical property.For…

Q: Classify each change as physical or chemical. (a) the explosion of gunpowder in the barrel of a…

A: ANSWER

Q: The molecular liquid chloroform (CHCl3) has a density of 1.48 g/mL, while the molecular liquid…

A: If a new compound forms by mixing of two reactants, that is a chemical change, means both the…

Q: Classify each change as physical or chemical. (a) A balloon filled with hydrogen gas explodes upon…

A: Given statements are : (a) A balloon filled with hydrogen gas explodes upon contactwith a spark.(b)…

Q: Identify each process as a physical change or a chemical change. Give the basis for your answer. (a)…

A: The explanation is given below-

Q: You are given a hammer, a battery, a bulb, wires and switch.(a) How could you use them to…

A:

Q: Classify each property as physical or chemical. (a) the tendency of silver to tarnish(b) the shine…

A: Physical property is the characteristics of matter that is not associated with a change in its…

Q: Which of the following processes is a physical change? (a) evaporation of water; (b) combination…

A: In physical change, there is no change in the chemical composition.

Q: 2)historically,some of unit differences reflected the belief that the quantity measured was…

A: Introduction- To define historically how the erg and calorie unit exist as a single entity. These…

Q: Define physical changeand chemical change.State which type of change occurs in each of the following…

A: Any substance undergoing a physical change does not experience changes in the composition of the…

Q: Distilling a red liquid physically separates it into a red solid and a clear, colorless liquid. The…

A: Element is made up of single type of atoms and compound is made up of different type of…

Q: Sodium and potassium are both shiny metals in pure form, but corrode rapidly in the presence of…

A: The reaction of sodium and potassium with oxygen gas and humidity can be shown through the balanced…

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.