An example of a pure substance is an element a) a compound b) c) H,O carbon dioxide d) all of these e) 5.

Q: Is carbon dioxide gas a pure substance? Explain.

A: Yes, the Carbon dioxide(CO2) is a pure substance.

Q: . A chemist mixes sodium with water and witnesses a violentreaction between the two substances. This…

A: The given statement is   A chemist mixes sodium with water and witnesses a violent reaction between…

Q: Define substance and chemistry.

A: Given terms,      Substance and chemistry

Q: Evaporation of alcohol is a physical change. Select one: O True O False

A: The change is said to be a physical change if there is no change in the chemical composition of the…

Q: Explain the following changes in states of matter. Write one example for each. (a) Boiling (b)…

A: Boiling -   It is a rapid heating of  a liquid which further convert into its vapor when temperature…

Q: 1. What is a unit?

A: A unit of measurement is some specific quantity that has been chosen as the standard against which…

Q: 2. What is matter composed of?

A: To find: What is matter composed of

Q: 24- Of the following propositions the one that illustrates a chemical property is:Unique option.…

A: Chemical property :-  A property of the substance which involve the formation of a new substance by…

Q: a cylinder with inner radius 1.25cm contains 44.0g of ethanol (density = 0.789g/mL), what is the…

A: As density of ethanol is given 0.789 g / mL and density is the ratio of mass and their volume which…

Q: Which of the following is not an extensive chemical property? Select one: O a. enthalpy O b. mass O…

A: Extensive property: An extensive property of a system depends on the size or mass of the system.…

Q: Q1. Which substance is a pure compound?(a) Gold (b) Water(c) Milk (d) Fruit cake

A: Pure substances can be defined as the compound or an element where an element is a pure substances…

Q: A salt water solution is classified as what type of matter? O homogeneous mixture O heterogencous…

A: Homogeneous Mixture: A homogeneous mixture is a mixture in which the composition is uniform…

Q: The glass apparatus shown in the diagram is known as and is used for measuring. O pipette,exact…

A:

Q: Why do the ability to separate and recover pure substances from mixtures is extremely important in…

A: Purity is a necessity of scientific research.

Q: You observe that sugar dissolves more quickly in hot teathan in iced tea. You state that higher…

A: An unexplained situation for whom a solution is suggested that is not acceptable by a scientific…

Q: Identify the following as a pure substance or mixture * xXx

A: Pure substance is defined as the sample containing only one type of molecules of the compound.

Q: Which is the best example of a pure substance: O A. elements B. compounds C. pure water D. carbon…

A: Introduction: Pure substance is a homologous material which contains particles ( atoms or molecules)…

Q: V'18, Lavonda Deale ( 4766/ S) A student collected the data shown in the table below during an…

A:

Q: Give examples of pure substances and mixtures.

A: A material containing only one substance is called a pure substance. Pure substances are further…

Q: 18. A(n) is a property of matter one can observe or measure and without changing its identity.…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: Is pure 24-carat gold a substance, element, and/or compound? Explain.

A: 24-carat gold an element. It can be also reffered to as pure substance. It contains only the gold…

Q: A 10.00mL sample of liquid is added to a flask with a mass of 90.05g. The mass of the flask and…

A: Given, Volume of liquid =10.0 mL mass of flask =90.05 g mass of flask and liquid =98.0 g

Q: Hi, please choose which of the two substances has the property lis

A: 1. Boiling point depends upon mass .           Boiling point  α  molecular mass     2. Soulbility…

Q: What are the two fundamental capacities of an object?

A: Capacity is the ability of an object to hold the amount of liquid when it's full or half.  It…

Q: Which of the following are the same and which are different?a. a substance and a pure substanceb. a…

A: Step 1 Pure Substance is a substance which has same kind of element or compound. It has a definite…

Q: Identify the characteristics of a substance.

A: To find: The Characteristics of a substance

Q: Which of the following is an example of a chemical property? A) density B) ductility C)…

A: A chemical property describes how a substance may participate in a chemical reaction.

Q: 3. Label the following as a pure substance or a mixture. (a) (b) (c)

A: Pure substance: A pure substance is formed by only one type of particle. A pure substance can be a…

Q: What is substance examples?

A: To define: A substance.

Q: An N-type sample of silicon has uniform density (Nd = 1019cm-3) of arsenic. and a P-type  

A:

Q: Which one of the following is a PURE chemical substance Sea water O Selenium O Air O Paper

A: Given substances: Sea water Selenium Air Paper We have to find the pure chemical substance.

Q: What is the difference between a heterogeneous and a homogeneous material?

A: Homogeneous and heterogeneous material are two classes of materials which differ in their…

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: Which is a property of a nonmetal? A. Poor conductor of electricity B. Solid at room temperature C.…

A: We know that a nonmetal is Poor conductor of electricity

Q: 6. Which of the following is a pure substance? a. Diamond b. Salt solution Soap d. Steel c.

A: Since we only answer one question at a time, we'll answer the first one. Please resubmit the…

Q: Q2. Explain the following changes in states of matter. Write two examples for each. (a) Boiling (b)…

A: States of matter

Q: is sugar water considered to be a heterogenous mixture and if so why

A: A homogeneous mixture is the one in which composition of molecules is uniform throughout the…

Q: Determine if the following mixtures are homogeneous or heterogeneous. Explain why they are…

A:

Q: Matter

A: All matter is made up of elements which have specific chemical and physical properties and can't be…

Q: A) gas B) solid C) liquid D) salts E) ice

A:

Q: As ice is heated, the two states of matter that are observed immediately after are and which sit on…

A: Ice is at 0°C temperature. When it is heated it immediately have two states of matter.

Q: Classify following as pure substances and mixtures – Air, glucose, gold, odium and milk.

A: Given: Air, glucose, gold, sodium and milk

Q: What is Homogeneous substance? Give an example?

A: Homogenous substance or homogenous mixture is a phase in which we cannot differentiate the particles…

Q: O Playing a Game-Quizizz CO a…

A: Atomic radius is defined as the distance from the centre of nucleus to the outermost shell.

Q: The following picture is a representation of what type of matter? * O a compound O a mixture of…

A: Matter - anything that has mass and occupies space

Q: Which of the following would you characterize as a pure ornearly pure substance? (a) baking powder;…

A:

Q: Matter that has a uniform and unchanging composition is know as a... a. compound b.mixture c.…

A: We can separate everything we see into two different parts:- Substances and Mixtures Substance is…