Which of the following items is a pure substance?   A. brass   B. air   C. ice   D. coffee   E. seawater

Q: Define the terms chemistry and matter.

A: Chemistry is not only a subject to study, it's related to our daily life experiences. The uses of…

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

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

Q: suppose of magnesium filings and a teaspoon of powdered sulfur are placed together in a metal…

A: Pure substances are composed of only 1 type of element, molecule.

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: Which of the following is a pure substance existing as different phases in a heterogeneous system?…

A: The correct option is as follows:

Q: 8. An example of a homogeneous mixture is a) b) chicken noodle soup powerade the helium inside a…

A: A homogeneous mixture has a uniform composition and appears visually the same throughout. Any…

Q: Grape juice is an example of a(n) A) element B) compound C) homogeneous mixture D) heterogeneous…

A: All matters in nature are mainly classified as two. They are pure substances and mixtures.  A pure…

Q: A good example of a homogeneous mixture is(a) a cola drink in a tightly capped bottle(b) distilled…

A: A mixture is a blend of components where the constituent components retain their properties and…

Q: How does a heterogeneous mixture differ from a homogeneous mixture? How are they similar?

A: Mixtures are the result of mixing together of two or more substances. Example: Mixture of salt and…

Q: classify each of the following as a pure substance or a mixture. If a mixture, then identify weather…

A: Each of the following is to be classified as a pure substance or a mixture. If a mixture, then…

Q: 114. Classify each as a pure substance or a mixture. If it is a pure substance, classify it as an…

A: An element is the simplest type of substance comprising of a single type of matter.  A compound is…

Q: its to compare the properties of two substances. In doing it, he prepare two flasks containing the…

A: As per our guidelines we can only solve first question. Please resubmit the other questions as next…

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: Solid antimony has a density of 6.70 g/cm°. Liquid antimony has a density of 6.53 g/cm°. If a 1.34…

A: The density of the solid antimony is = 6.70 g/cm3 The density of the liquid antimony is = 6.52 g/cm3…

Q: coffee (with milk) a. suspension b. solution c. an element d. heterogeneous mixture

A: Coffee on dissolving in milk forms a homogeneous mixture because the particles of coffee…

Q: How would you distinguish mixtures from substances based on a set of properties? Give examples

A: Substance is that class of matter which is made of only one type of atom or molecule while as…

Q: Classify each of the following as a compound, a homogeneous mixture, or a heterogeneous mixture: (a)…

A: (a) distilled water: Compound. Distilled water is a pure substance ( compound) made up of hydrogen…

Q: 34. Classify each mixture as homogeneous or heterogeneous.(a) baby oil(b) chocolate chip cookie(c)…

A: (a) baby oil(b) chocolate chip cookie(c) water and gasoline(d) wine

Q: Is the following transformation representative of a physical change or a chemical change? see photo…

A: Physical change: The change of state of matter is known as a physical change. In this change…

Q: 1. Which is an example of a physical change? A) The rusting of an iron nail B) The burning of…

A: melting of an ice cube in a glass of soda is a physical change. So option e is correct answer. Here…

Q: Classifaction

A: All matter can be classified as mixture and pure substances. A pure substance is composed of same…

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: Question 3

A: The intermolecular distances between the gas particles are greater. Gas has no definite shape or…

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: You are taking a road trip in a car without A/C. The temperture in the car is 85 degrees F. You buy…

A:

Q: Homogeneous mixtures(

A: A. distilled water is a pure substance, not a homogeneous mixture. B. gasoline is homogeneous…

Q: Match the correct word with the description. v Blood is an example of element. A. v Air is an…

A: Elements are those substances which contain the same atoms with same number of protons while…

Q: How would you classify the following material? coffee (black) a. solution b. an element c.…

A: A solution contains two or more substances of uniform particle size.  It is a homogeneous mixture.A…

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: How are mixtures and substances related? Elements and compounds?

A: The matter is defined as something which has a mass and can take up some volume. The mixtures by its…

Q: Classify each substance as a pure substance, a homogeneous mixture, or a heterogeneous mixture.a.…

A: Hi, since you have posted questions with multiple subparts. We will answer the first three subparts.…

Q: How could you determine if ink is a pure substance or a mixture?

A: Substances which cannot be separated into other constituents and have a particular composition is…

Q: most of the materials around us are composed of mixtures of pure substances. What do you call a…

A: ANSWER : Mixture  A mixture is a physical blend of two or more components, each of which retains its…

Q: How is chemistry in our everyday life’s ?

A: The human beings survived by the chemical process includes, respiration, digestion, reproduction…

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: Is a cup of coffee a pure substance or mixture?

A: Since we know that a pure substances is define as the matter having both definite and constant…

Q: 21. Which of the following involves a change of state in matter? * a. Adding food color to water b.…

A: 21.)  Change is state involves conversion of state from Solid - liquid - gas .  22.) Naphthalene…

Q: 57.0 µL drops of two different liquids are put on the same surface: Liquid X Liquid Y Note for…

A: The solution is given below -

Q: light

A: C) heat Calorie A unit of heat equal to the amount of heat needed to raise the temperature of 1,000…

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

A:

Q: Q/ Label each as a physical property or a chemical property. a) Gasoline evaporates quickly.…

A: Physical properties :  " The properties of matter that can be measured without changing chemical…

Q: 20 Match the picture on the left, with the correct classification on the right. 1 Compound…

A:

Q: A bottle of sports drink is homogeneous or heterogenous ? B) well water is a pure substance of a…

A: A mixture is defined as a material made up of two or more different substances that are not…

Q: 1. Metal Ore a. element b.compound c. mixture   2.  Grinding dried leaves into a fine powder…

A: We have to classify metal ore and type of change occuring on grinding leaves.

Q: Could you please explain the law of conservation for match sticks.

A: Let us consider the question as “explain the law of conservation of mass for burning of match…

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.