Your breakfast this morning was so nutritious! You had two eggs, a slice of toast and some orange juice. You were lucky, though ... your mom noticed some smoke coming from the toaster and took your toast out before it burned. Thanks to her, your toast was a perfectly crunchy and light-brown in color: During this process, did the bread undergo a physical change or a chemical change? What evidence from the story or the image proves that you are correct?

Q: Question 9: Draw the structure of the simplest benzene compound with an aldehyde group and an alkyl…

A: In this question we need to draw the structure of the simplest benzene compound with an aldehyde…

Q: Rank the structures from most acidic (1) to least acidic (3). A B U N H A H H-CI B [Choose ] [Choose…

A: The strength of the acid can be determined by the stability of the conjugate base after the donation…

Q: Give the formula for cobalt(II) chlorate dihydrate: O COCIO3(H₂O)2 O Co(CIO3)2(H₂O)2 CoCl₂.2H₂O…

A:

Q: Go to the Molecules mode by selecting the icon at the bottom. Notice that there are three real…

A: We have certain reactants and have to tell which one in limiting and which one is excess.

Q: Calculate the charge of an ion that contains 32 protons, 32 neutrons, and 30 electrons. OA. -2 B. 0…

A: In an atom three fundamental particles are present. Positively charged particle proton and neutral…

Q: Give a clear handwritten answer with explanation....give name and draw all isomers for the given…

A: Note- Since it is a mutipart question, hence I solved first three part of the question according to…

Q: What is the IUPAC name for the following molecule? Question 9 What is the IUPAC name for the…

A: To answer:  What is the IUPAC nomenclature of the following molecules?

Q: Disulfur dichloride, S₂Cl₂, is used to vulcanize rubber. It can be made by treating molten sulfur…

A: Sulfur reacts with chlorine to form disulfur dichloride. The equation for the balanced chemical…

Q: Why is it difficult to study the origin of life? Select all that apply. The fossils of the first…

A: Life has only originated once, and we aren't there when it happened.  Only one option.

Q: 3. Tm is the temperature at which all of a certain DNA issingle-stranded.  a. true  b.false…

A:

Q: Quantum numbers arise naturally from the mathematics used to describe the possible states of an…

A:

Q: Use the References to access important values if needed for this question. Does a reaction occur…

A: Here, we have to find whether a reaction will occur or not when aqueous solutions of chromium(III)…

Q: 4. Balance the reactions H₂+ N₂ → NH3 CaCl2 + AgNO3- → Ca (NO3)2 + SnO2 + H2 → H₂O + Sn Na2CO3 +…

A: We have given seven chemical equations and we are asked to write their corresponding balanced…

Q: What’s Acetone? What the abstract of Acetone?

A:

Q: The ionization of acetic acid may be written as: HC,H,O, (aq) − H*(aq) + C,H,O, (aq). Examine the…

A: The ionization of acetic acid: HC2H3O2aq→H+aq+C2H3O2-aq The net ionic reactions and their heat of…

Q: Provide the correct IUPAC name for LiSCN.

A: we have to write the IUPAC name of LiSCN

Q: An oxygen cylinder used as a standby source of oxygen contains 7.0 ft^3 of O2 at 587 degR and 212.0…

A:

Q: what are the methods used to reduce the incidence of acid deposition and photochemical smog; e.g.,…

A: Several methods are now adapted to reduce the incidence of acid deposition and photochemical smog…

Q: Hydrocortisone (shown below) is a steroid hormone used to treat inflammation, allergies, and skin…

A:

Q: A student rushed through this experiment. Describe the effect that the following procedural changes…

A: To find out the effect on the percent recovery of acetanilide due to the given procedural changes.…

Q: actions to indicate r all of the bond-fo eaking steps.

A: Organic reactions are those in which organic reference react to form Organic products. In organic…

Q: B. A 1.0-mol sample of an ideal gas is kept at 0 °C during an expansion from 0.003 m³ to 0.01 m³.…

A:

Q: From the ?b values for malate, ?b1=1.25×10−9 and ?b2=2.87×10−11, calculate the two ?a values of…

A:

Q: Choose the most stable carbocation in the figure shown below. I. II. III. CH3 CH3 CH3 IV. CH3 ✪ CH₂

A:

Q: When 1-hexyne reacts with excess HBr, what is the main product? Br Br Br

A:

Q: Write a balanced molecular equation for the reaction between citric acid (lemon juice) and sodium…

A: Recall the given reaction between citric acid lemon juice and sodium bicarbonate baking sode -…

Q: The two compounds shown below are: Br Br. H and "A" A H H H Br Br diastereomers. meso forms.…

A:

Q: Question 3^. Saved What are general rules for the lab? (Select all that apply.) If instructions are…

A:

Q: What is the most probable identity of the element X wb symbol is shown below? O a. tellurium O b.…

A: By seeing the element symbol with valance shell electrons we can predict the element name.

Q: Complete and balance the following acid-base equations. (Assume that these reactions go to…

A: Balanced chemical equation: a balanced chemical equation is the reaction in which number of atoms of…

Q: which of the following has the largest entropy?

A: To answer: which of the following has the largest entropy? H2O (s) H2O (l) H₂O (g) H₂S (g) H2S (l)

Q: The corn-rich diet of the rural South contained very little trytophan, an essential amino acid that…

A: Line water is a mixture of slaked lime and quicklime.  The chemical formula of slaked lime is…

Q: Imagine you were working as a laboratory technician and your principal investigator asked you to…

A: Benedict's solution oxidizes the aldehyde group or α-hydroxyketone group of reducing sugars into an…

Q: 9. How many sodium ions are contained in 1.64 g of Na3PO4? The molar mass of Na₂SO3 is 163.94 g/mol.…

A:

Q: You have 17.14 lb of CO2 in a 47.26 ft3 fire extinguisher tank at 50degC. Assuming that the ideal…

A:

Q: What is the major product of the following reaction? Select one: Br J ملل de EtON a EtOH Δ ?

A:

Q: H₂ + N₂ → NH3 CaCl2 + AgNO3 → Ca (NO3)2 + AgCl SnO2 + H2 → H₂O + Sn

A: 1.Balancing chemical equation means number of atom of each elements  and charge involves in reactant…

Q: How many molecules of N2O4 are in 76.3 g N₂O4? The molar mass of N₂O4 is 92.02 g/mol. O 7.26 x 1023…

A:

Q: Calcium in powdered milk is determined by dry ashing a 3.00g sample then titrating the calcium with…

A: Concentration of Ca can be figure out by calculating concentration of EDTA solution.

Q: Q.1 02 Calculate the fraction of ionic character of (1) GaAs, (ii) ZnS, and (iii) AgCl. Comment on…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: % v/v,% w/v Questions 22. How do you prepare 250 ml of 40% v/v glycerol? 23. How do you prepare 0.3…

A: 22)  Given :-  v/v % Glycerol = 40%  Volume of 40% Glycerol = 250 mL…

Q: The molar composition of a gas is 10% H2, 10% O2, 30% CO2 and balance H2O. If 50% H20 condenses, the…

A: Solution is made up of two components salute and solvent the component which is present in major…

Q: 1. Write the ionic equation. Identify the spectator ions. Write the net ionic equation. a) Ca(OH)2 +…

A:

Q: Determine both the freezing point and boiling point of a 1.50m aqueous solution of ammonium…

A:

Q: CH3 | H CHI N- CH3 H + Lit-O-H Draw the product of reaction B. Select Draw Rings G H₂C CH₂ More CH3…

A:

Q: A). Calculate the molar concentration of 1.00 ppm solutions each of Lit and Pb²+. B). What weight of…

A: To find out the molar concentration of 1.0 ppm solutions each of Li+ and Pb2+.   A solution of 1 ppm…

Q: What mass of MgCl2 is required to prepare 500.0 mL of 0.100 M solution?    using dimensional…

A:

Q: 6. Calculate the uncertainty in the speed of a ball of mass 500 g that is known to be within 1.0 um…

A:

Q: A. An ice cube is 20 mm on a side. How much energy is needed to melt the ice cubes if their initial…

A: Here we have to determine the amount of heat required to melt ice cube of side 20mm at 32°F(0°C)  to…

Q: 1.) i.)Using the infrared spectra provided assign peaks to the functional groups in (a)…

A: (a)3-nitroacetophenone; (b) 3-aminoacetophenone; (c) 1-(3-nitrophenyl)ethanol.

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.