Determine the classes of matter described by each question. Each question may describe more than one class of mater.  In which of these classes must two or more substances be present?Which of these classes could not possibly have a variable composition?For which of these classes is separation into simpler substances by physical means possible?   Answer bank: pure substances, homogenous mixtures, heterogenous mixtures

Q: Silver spoon is an example of  Element? Compound? Homogeneous mixture? Hetergeneous mixture?

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Q: Determine whether each sample is a pure substance or a mixture. Then further classify them as…

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

Q: . When table salt is placed in water and stirred it dissolves and a clear liquid is obtained. This…

A: On the basis of changes; all processes can be classified as physical change and chemical change. The…

Q: Classify each of the following as either a pure substance, homogeneous mixture or a heterogeneous…

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Q: Distinguish between each of the following and give example of each case A. Pure substance and…

A: Pure substance are in a category of one kind of particles and it has a fixed structure and of same…

Q: CHM 010 Virtual Lab Study of Elements, Compounds and Mixtures Watch the following video on the…

A: Homogeneous mixture is the mixture in which the components remain in one phase, i.e., have the…

Q: Fact, Law, Hypothesis, or Theory? __ An object less dense than the air flies up on its own. __…

A: Factt: It is known or proved to be true. Law: A scientific law is the description of an observed…

Q: Elemental bromine is a dense, dark red, strong-smelling liquid. Are these characteristics of…

A: All the above mentioned properties are physical properties of elemental bromine.

Q: True or False When a physical change occurs,  a change in state occurs which indicates that a new…

A: In a physical reaction the property of the component ramains same as before the reaction. e.g. Ice…

Q: Are the following chemical (C) or physical changes (P)? Sugar dissolves in water b) Sugar is heated…

A: a) Sugar dissolves in water In this process, sugar is dispersed in water, but the sugar molecules…

Q: Briefly discuss the difference between a homogenous mixture and a heterogeneous mixture.

A: When different substances mix to form a uniform mixture in same phase , then it is called…

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.