if you want to remove an article from website contact us from top.

    which is a characteristic of mixtures? they are chemically bonded together. they can be classified as pure substances. they have fixed ratios between their components. they can be separated by physical processes.

    James

    Guys, does anyone know the answer?

    get which is a characteristic of mixtures? they are chemically bonded together. they can be classified as pure substances. they have fixed ratios between their components. they can be separated by physical processes. from EN Bilgi.

    Substances and Mixtures

    Skip to main content

    Introduction to Chemistry

    Substances and Mixtures

    Learning Objective

    Distinguish chemical substances from mixtures

    Key Points

    Matter can be broken down into two categories: pure substances and mixtures. Pure substances are further broken down into elements and compounds. Mixtures are physically combined structures that can be separated into their original components.

    A chemical substance is composed of one type of atom or molecule.

    A mixture is composed of different types of atoms or molecules that are not chemically bonded.

    A heterogeneous mixture is a mixture of two or more chemical substances where the various components can be visually distinguished.

    A homogeneous mixture is a type of mixture in which the composition is uniform and every part of the solution has the same properties.

    Various separation techniques exist in order to separate matter, including include distillation, filtration, evaporation and chromatography. Matter can be in the same phase or in two different phases for this separation to take place.

    Terms

    substanceA form of matter that has constant chemical composition and characteristic properties. It is composed of one type of atom or molecule.

    elementA chemical substance that is made up of a particular kind of atom and cannot be broken down or transformed by a chemical reaction.

    mixtureSomething that consists of diverse, non-bonded elements or molecules.

    Chemical Substances

    In chemistry, a chemical substance is a form of matter that has constant chemical composition and characteristic properties. It cannot be separated into components without breaking chemical bonds. Chemical substances can be solids, liquids, gases, or plasma. Changes in temperature or pressure can cause substances to shift between the different phases of matter.

    An element is a chemical substance that is made up of a particular kind of atom and hence cannot be broken down or transformed by a chemical reaction into a different element. All atoms of an element have the same number of protons, though they may have different numbers of neutrons and electrons.

    A pure chemical compound is a chemical substance that is composed of a particular set of molecules or ions that are chemically bonded. Two or more elements combined into one substance through a chemical reaction, such as water, form a chemical compound. All compounds are substances, but not all substances are compounds. A chemical compound can be either atoms bonded together in molecules or crystals in which atoms, molecules or ions form a crystalline lattice. Compounds made primarily of carbon and hydrogen atoms are called organic compounds, and all others are called inorganic compounds. Compounds containing bonds between carbon and a metal are called organometallic compounds.

    Chemical substances are often called ‘pure’ to set them apart from mixtures. A common example of a chemical substance is pure water; it always has the same properties and the same ratio of hydrogen to oxygen whether it is isolated from a river or made in a laboratory. Other chemical substances commonly encountered in pure form are diamond (carbon), gold, table salt (sodium chloride), and refined sugar (sucrose). Simple or seemingly pure substances found in nature can in fact be mixtures of chemical substances. For example, tap water may contain small amounts of dissolved sodium chloride and compounds containing iron, calcium, and many other chemical substances. Pure distilled water is a substance, but seawater, since it contains ions and complex molecules, is a mixture.

    Chemical Mixtures

    A mixture is a material system made up of two or more different substances, which are mixed but not combined chemically. A mixture refers to the physical combination of two or more substances in which the identities of the individual substances are retained. Mixtures take the form of alloys, solutions, suspensions, and colloids.

    Naturally occurring sulfur crystalsSulfur occurs naturally as elemental sulfur, sulfide, and sulfate minerals and in hydrogen sulfide. This mineral deposit is composed of a mixture of substances.

    Heterogeneous Mixtures

    A heterogeneous mixture is a mixture of two or more chemical substances (elements or compounds), where the different components can be visually distinguished and easily separated by physical means. Examples include:

    mixtures of sand and water

    mixtures of sand and iron filings

    a conglomerate rock water and oil a salad trail mix

    mixtures of gold powder and silver powder

    Interactive: Oil and WaterExplore the interactions that cause water and oil to separate from a mixture.

    Homogenous Mixtures

    A homogeneous mixture is a mixture of two or more chemical substances (elements or compounds), where the different components cannot be visually distinguished. The composition of homogeneous mixtures is constant. Often separating the components of a homogeneous mixture is more challenging than separating the components of a heterogeneous mixture.

    Distinguishing between homogeneous and heterogeneous mixtures is a matter of the scale of sampling. On a small enough scale, any mixture can be said to be heterogeneous, because a sample could be as small as a single molecule. In practical terms, if the property of interest is the same regardless of how much of the mixture is taken, the mixture is homogeneous.

    Source : courses.lumenlearning.com

    Chemistry Test 1

    Start studying Chemistry Test 1-Elements, Compounds and Mixtures #2. Learn vocabulary, terms, and more with flashcards, games, and other study tools.

    Chemistry Test 1-Elements, Compounds and Mixtures #2

    3.7 6 Reviews

    Which cannot be separated into simpler substances?

    compound element solution mixture

    Click card to see definition 👆

    element

    Click again to see term 👆

    Which is a characteristic of mixtures?

    They are chemically bonded together.

    They can be classified as pure substances.

    They have fixed ratios between their components.

    They can be separated by physical processes.

    Click card to see definition 👆

    They can be separated by physical processes.

    Click again to see term 👆

    1/10 Created by Alex_Meche2

    Terms in this set (10)

    Which cannot be separated into simpler substances?

    compound element solution mixture element

    Which is a characteristic of mixtures?

    They are chemically bonded together.

    They can be classified as pure substances.

    They have fixed ratios between their components.

    They can be separated by physical processes.

    They can be separated by physical processes.

    The chemical formula for emerald is Be3Al2(SiO3)6. An emerald can be described as

    a pure substance because it is a compound.

    a pure substance because it is an element.

    an impure substance because it is chemically combined.

    an impure substance because it is a mixture.

    a pure substance because it is a compound.

    Which is a substance that is made up of only one type of atom?

    compound element solution mixture element

    Which best describes a compound such as sodium chloride?

    a pure substance that can be separated into different elements by physical means

    a mixture of two common substances that can be separated by chemical means

    a mixture of two common elements that can be separated by physical means

    a pure substance that can be separated into different elements by chemical means

    a pure substance that can be separated into different elements by chemical means

    A rock can be broken down into different kinds of substances by physical processes. No chemical reactions are needed to separate different parts of a rock into pure substances. This is because a rock is a(n) _____________.

    Mixture

    What can a drop of liquid mercury be described as?

    a pure substance and a compound

    an impure substance that is reactive

    an impure substance that is unreactive

    a pure substance and an element

    a pure substance and an element

    A solid precipitate is formed from the reaction of lead nitrate and sodium chromate.

    What would be the best method to separate this solid from the solution?

    distillation evaporation filtration sorting filtration

    A teacher makes the following statement.

    "Gasoline boils at a relatively low temperature (about 150°C). The kerosene is removed at around 200°C, followed by diesel oil at 300°C and fuel oil at around 370°C."

    What topic is the teacher most likely talking about?

    distillation of a mixture

    filtration of a pure substance

    evaporation of a mixture

    sorting of a pure substance

    distillation of a mixture

    Which sample is a pure substance?

    a test tube of zinc oxide

    a container of zinc and oxygen

    a flask of pond water

    a jar of soil

    a test tube of zinc oxide

    Related questions

    QUESTION

    The unstable nucleus of an isotope spontaneously decays, thereby emitting this type of energy.

    5 answers QUESTION

    Explain the difference between a gas and a vapor.

    15 answers QUESTION

    Determine the new boiling point of a solution containing 190g MgCl2 in 1800g water at room temperature: (Kb= .512)

    13 answers QUESTION

    Uranium hexfluoride (UF6) is much heavier gas than helium, yet at a given temp, the average kinetic energies of the samples of the two gases are the same. Explain.

    2 answers

    Sets found in the same folder

    Chemistry Test 2- The Structure of the Atom 1

    18 terms Alex_Meche2

    Chemistry - Periodic Trends

    13 terms GrimmDefience

    Bell E Periodic Trends

    16 terms kellybell312

    CHEM. ELEMENTS COMPOUNDS , AND MIXTURES Q.1 U…

    10 terms kaitlyn_taylor88

    Sets with similar terms

    Elements, Compounds, and Mixtures Quiz

    10 terms angelnamederika

    physics and chemistry

    21 terms janie2210

    Elements, Compounds, and Mixtures

    10 terms studmuffingirl

    Elements, Compounds, and Mixtures

    16 terms jessholleyyy

    Other sets by this creator

    Micro Lab #4

    11 terms Alex_Meche2

    Micro Lab #3

    11 terms Alex_Meche2

    Microbiology 201

    8 terms Alex_Meche2

    Growth + Development Quiz 2

    72 terms Alex_Meche2

    Other Quizlet sets

    los infinitivos

    16 terms tstone143

    English III: Poets/Authors

    82 terms veronicagonzales

    ES 204 assignment 3.0

    14 terms gsg__14PLUS

    Health

    15 terms Sofia14620 1/5

    Source : quizlet.com

    Compound vs Mixture

    What's the difference between Compound and Mixture? Compounds are pure substances. They are made from the same types of molecules. Each molecule of a compound is made from two or more different kinds of atoms that are chemically bonded. Mixtures are made of two or more substances — elements or compounds — t...

    HEALTH SCIENCE TECH HOME FOOD BUSINESS INSURANCE

    Compare Anything ››

    Compound vs. Mixture

    Diffen › Science › Chemistry

    Compounds are pure substances. They are made from the same types of molecules. Each molecule of a compound is made from two or more different kinds of atoms that are chemically bonded. Mixtures are made of two or more substances — elements or compounds — that are mixed physically but not chemically; they do not contain any atomic bonds.

    Comparison chart

    Compound versus Mixture comparison chart

    Compound Mixture

    Definition A compound contains atoms of different elements chemically combined together in a fixed ratio. A mixture is a combination of two or more substances where there is no chemical combination or reaction.

    Composition Compounds contain different elements in a fixed ratio arranged in a defined manner through chemical bonds. They contain only one type of molecule. Elements that compose the compound are chemically combined. Mixtures contain different elements and compounds but the ratio is not fixed nor are they combined via chemical bonds. The ingredients are physically mixed but chemically separate. Often they are visibly distinct.

    Ability to break down A compound can be separated into simpler substances by chemical methods/reactions. A mixture can be separated into simpler substances by physical or mechanical methods.

    Examples Water (H2O), Sodium chloride (NaCl), Sodium bicarbonate (NaHCO3) and Hydrochloric acid (HCl) are examples of compounds. Salt in water; pasta and sauce; sand; pebbles; solutions such as rubbing alcohol, dental amalgam, vapor in air; colloids such as mayonnaise, milk, cheese; coarse suspensions such as mud in water, oil in water.

    Representation A compound is represented using its chemical formula that represents the symbols of its constituent elements and the number of atoms of each element in one molecule of the compound. Mixtures cannot be represented by chemical formulas.

    Chemical and physical properties Compounds have specific chemical and physical properties that are distinct from their constituent elements because the constituent elements lose their properties when they combine to make the compound. Mixtures do not have specific, consistent chemical and physical properties of their own. They reflect the properties of their constituent substances, which retain their original properties. e.g. chocolate milk retains properties of chocolate and milk

    Types A huge, virtually limitless, number of chemical compounds can be created. Compounds are classified into molecular compounds, ionic compounds, intermetallic compounds and complexes. Solids, Liquids and Gases can be combined to create a mixture. Mixtures can be homogeneous or non-homogeneous.

    Mass ratio Compounds have specific mass ratios. e.g. pyrite has 46.6% iron and 53.4% sulphur by mass. This is true of all pyrite no matter the sample size. Mixtures have a variable mass ratio depending upon what quantities of ingredients have been combined in the mixture.

    Constituents of Compounds and Mixtures

    Compounds are made up of elements, which are pure substances with only one kind of atoms. Atoms of the elements form bonds to combine and make up a molecule of the compound. The compound contains a uniform distribution of these molecules.

    A compound has different physical and chemical characteristics than its component elements. It is not possible to see the elements when you see the compound. e.g. water is made of hydrogen and oxygen but you cannot see either element separately when you look at water. Salt is made of sodium and chloride but the physical and chemical properties of salt are completely different from those of sodium or chloride.

    Types of matter: elements, compounds, homogeneous and heterogeneous mixtures.

    Both elements and compounds are called pure substances because they contain only one type of molecule. A mixture contains two or more types of pure substances. The molecules of these substances do not form any chemical bonds in a mixture. Components of a mixture retain their chemical independence but physically blend into each other. It is often possible to see these components and differentiate them visually.

    Separating the components

    The component elements of a compound can only be separated via a chemical reaction that breaks the atomic bonds that bind its molecules.

    The ingredients of a mixture may be separated by physical means like sedimentation or decantation.

    References

    Mixture - Compounds -

    Experiments to see how compounds and mixtures of iron and sulphide behave under various conditions -

    Matter: Mixtures vs Compounds -

    Related Comparisons

    Element vs Compound

    Homogeneous vs Heterogeneous Mixtures

    Covalent Bonds vs Ionic Bonds

    Brass vs Bronze

    Adhesion vs Cohesion

    Osmosis and Diffusion

    Follow Share Cite Authors

    If you read this far, you should follow us:

    Comments: Compound vs Mixture

    Related Comparisons Element vs Compound

    Homogeneous vs Heterogeneous Mixtures

    Covalent Bonds vs Ionic Bonds

    Brass vs Bronze

    Adhesion vs Cohesion

    Osmosis and Diffusion

    Source : www.diffen.com

    Do you want to see answer or more ?
    James 9 month ago
    4

    Guys, does anyone know the answer?

    Click For Answer