Classify each of the following as a physical or chemical change:a. A gold ingot is hammered to form gold leaf.b. Gasoline burns in air.c. Garlic is chopped into small pieces.

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: A marshmallow is toasted over a fire. It turns golden brown and caramelizes on the outside. It…

A: The toasting or roasting of a marshmallow is considered a chemical change in general as there are…

Q: B Type of change: (circle) Physical Chemical Explain:

A: When a change affects only the physical properties of a substance like color, shape, flexibility,…

Q: Calculate the amount of heat needed to and the correct number of significant d

A: Answer: 26.7 KJ

Q: A vanilla milkshake at a restaurant contains 542 calories. What quantity of energy is in this shake…

A: 1 kilocalories = 4184 joules1 calorie = 4.184 joules.

Q: When iron rusts, solid iron reacts with gaseous oxygen to form solid iron(III) oxide. Part A Enter a…

A: Given : Iron rusting is a process in which solid iron reacts with gaseous oxygen to form solid iron…

Q: 17. Based on the molecular diagram, classify each change as physical or chemical. a. b.

A: When we see the first reaction we see that there is no change in the composition of the reactants…

Q: When energy is added to a liquid, it’s particles begin to move what

A: When we add energy to liquid it’s particles begin to move as increase in motion occur and particles…

Q: he energy change?

A:

Q: Why are gases compressible?

A: The reason for gases are compressible has to be given.

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: A marshmallow is toasted over a fire. It turns golden brown and caramelizes on the outside. It…

A: Physical change - Observed when there is change in the state of a chemical substance but it's…

Q: heat (in joules

A:

Q: You are performing an experiment where you place 6.4673 g of Al metal at 209.82 C into a coffee cup…

A: Given, mass of Al metal =6.4673 g at 209.82 °CA coffee cup calorimeter that contains 87 g of water…

Q: 14. A researcher finds that a solid has high melting and boiling points, and is soluble in water.…

A: Ionic compound is a chemical compound composed of ions held together by electrostatic forces termed…

Q: A peanut butter and jelly sandwich contains 430 calories. How many joules are in the sandwich?

A: A calorie is a unit of energy that is generally employed in nutrition. The main definition of a…

Q: Describing the relationship between the melting time for an ice cube and amount of salt sprinkled on…

A: Based on the given statement we need to define what type it is.

Q: A tablespoon of olive oil contains 115 nutritional calories. How many joules of energy are in this…

A: Given : energy in calories = 115 cal.

Q: temperature started at 24.0°C and after it was C and ended at 58.0°C, how much heat would be

A: Specific heat capacity ( s ) for Hg = 0.14Jg-1 °C-1 Relation between heat and specific heat capacity…

Q: What happens to the gravitational force between two objects if the distance between them increases?…

A: Gravitational force is the universal force of attraction acting between all matters.

Q: Part B A silver necklace is made from a pure sample of silver that is free of impurities. Which term…

A:

Q: Ice Sculpture Drop of water Air around clouds State (Solid, Liquid, or Gas) Physical description…

A: Ice sculpture  State:-   Solid Physical description:- cage like structure Drop of water State :-…

Q: The space between particles within a substance depends on the state of the matter. Which list ranks…

A:

Q: When solid potassium chlorate is heated, it decomposes to form solid potassium chloride and oxygen…

A: According to the Law of conservation of mass " all atoms of different elements must be equal on both…

Q: Classify each of the following as a physical (P) or a chemical (C) change   Cooking an egg Boiling…

A: Before we classify the given changes as Physical Change or Chemical Change, let's understand the…

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: A low dose aspirin tablet contains 82 mg of aspirin how many tablets can obtain from 50.g  of…

A: Given that a tablet contains 82 m g of aspirin. The mass has to be converted into grams.

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: Find the temperature of the coffee after the ice melts.

A: Mass of ice cube = 8.5 g Mass of coffee = 130 g Enthalpy of fusion = 6 kj/mol  Molar mass of water =…

Q: Part A Find the food caloric content of peanut butter. Express your answer using two significant…

A: Peanut butter contain carbohydrates, fiber, protein, fat. Out of all these fat contain maximum…

Q: Air is a mixture of many gases, primarily nitrogen, oxygen, and argon. Could distillation be used to…

A: Air is a mixture of many gases, primarily nitrogen, oxygen, and argon. Could distillation be used to…

Q: Directions Think about the three stat.es of matter. from the WORD POOL. classify the examples given…

A: Given descriptions: Solid: Has its own shape. Takes up a definite amount of shape. Liquid: Takes the…

Q: 1.21 Label each of the following as either a physical process or achemical process: (a) rusting of a…

A: The answer for first three subparts are given below. Kindly repost the other subparts as separate…

Q: Identify whether the change is chemical or physical. Paper being folded into an airplane. *

A: There are two types of changes seen in the matter, chemical and physical. Physical changes are those…

Q: Fill in the blank. Critical concept of temperature is based on ___________

A: Critical concept of temperature is based on Kinetic Energy of Particles

Q: energy in motion.

A: Chemical energy is defined as the energy released or consumed during any chemical reaction.  On the…

Q: mixture contains 4.63 grams of oxygen, the number of

A: moles of O2 = ( mass / molar mass of O2 )  moles of O2 = ( 4.63g / 32gmol-1 )  moles of O2 ( nO2)  =…

Q: What piece of metal will you heat (choose its number)? What piece of metal will you cool (choose its…

A:

Q: the movement of solid, liquid and gas molecule of water when the temperature rise up and cool down?

A: Water has the three states of matter as Solid (Ice), Liquid (Water) and Gas (Water vapors).

Q: A 45-kg sample of water absorbs 345 kJ of heat.  If the water was initially at 22.1 degrees celsius,…

A: Change in temperature is determined using the given formula,Specific heat of water is 4.184 kJ/kg.oC

Q: :How to read the volume of liquid

A: Place the graduated cylinder on a flat surface and view the height of the liquid in the cylinder…

Q: A homogeneous mixture is made by dissolving 9.98 grams of solid potassium nitrate in 1000 g of…

A: We’ll answer the first question since exact one was not specified. Please resubmit a question and…

Q: Molecules possess the most amount of kinetic energy A. GAS B. LIQUID C. SOLID

A: Solid, liquid or gas are the states of the matter.  All are associated with some energies called…

Q: Select one: O a. hydrochloric acid attacks metal tube. O b. distilled sodium chloride (aq) resulting…

A: The question is based on the concept of changes taking place. there are two types of change…

Q: A change of kinetic energy of molecules create what property change in a body?

A: A question based on kinetic energy of molecules, which is to be accomplished.

Q: A student noticed a yellow, solid substance was formed when mixing two clear liquids during a lab.…

A: It is not a physical change because chemical reaction is taking place between two liquids to give a…

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.