Which of the Following Substances Can Have Variable Composition

A heterogeneous mixture consists of visibly different substances or phases. Which of the following substances can have variable composition.

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Pure substances are mostly homogeneous in nature containing only one type of atoms or molecules 2.

. In a compound containing copper and sulfur the two elements are. In a mixture of copper and sulfur the two elements maintain their individual properties. A Different mixtures of the same substances can have different compositions.

Pure substances do not have fixed composition whereas mixtures may contain the components in any fixed ratio b Pure substances have fixed composition whereas mixtures may contain the components in any ratio and their composition is variable. Identify the correct statements. All homogeneous mixtures must contain at least two substances.

A heterogeneous mixture consists of visibly different substances or phases. Alcohol and water would be a real homogeneous mixture gin or vodka can be kept in a bottle forever without separating and the percentage of alcohol can be highly variable. Properties always are the same under the same conditions-all samples of pure water all have the same properties tasteless colorless etc.

E no correct response. The study that is concerned with composition transformation and characteristics of matter is known as chemistry. C A solution is a homogeneous mixture.

Given statement Heterogeneous mixtures but not homogeneous mixtures can have a variable composition is true or false has to be classified. In a compound containing copper and sulfur physical methods can be. Mar 122022 - Which of the following statements is trueaHomogeneous mixtures can have variable compositionbHomogeneous mixtures fixed compositioncHeterogeneous mixtures have fixed compositiondSalt solution is heterogeneous mixtureCorrect answer.

A mixture containing copper and sulfur can have a variable composition. Pure substances cannot be separated into other kinds of matter by physical means. 127 d A substance which cannot be separated into two or more substances using physical means.

Which of the following statements concerning pure substances is correct. E A heterogeneous mixture has a variable composition throughout. C must be a pure substance.

In a mixture of copper and sulfur the two elements maintain their individual properties. A salad with lettuce cheese seeds tomatoes broccoli and other vegetables is an example of a heterogeneous mixture. Two substances A and B were made to react to form a third substance A2B according to the following reaction 2A B A2 B.

Which of the following statements concerning this reaction are incorrect. Definite and constant composition-water always has 89 O and 11 H. Compounds have a definite composition therefore they are pure substances.

C Pure substances cannot have a variable composition. This is opposed to an impure sample one with variable composition which would be called a. The number of known pure substances is less than 100000.

These substances mainly have a constant or uniform composition throughout 3. A pure substance usually participates in a chemical reaction to form predictable products. A mixture containing copper and sulfur can have a variable composition.

A Mixtures which have a uniform composition throughout are called homogeneous mixtures or solutions. D more than one correct response. T In a mixture of copper and sulfur the two elements maintain their individual properties.

Can be defined as something that has variable composition - wood - soda - coffee - water from the earth - air - sand. A mixture containing copper and sulfur can have a variable composition. D Compounds cannot be decomposed into simpler substances by chemical means.

T In a compound containing copper and sulfur physical methods can be used to separate the substances present. C Heterogeneous mixtures have non-uniform compositions. Ii The product will always have a fixed composition.

A mixture containing copper and sulfur can have a variable composition TRUE Shannon b In a mixture of copper and sulfur the two elements maintain their individual properties TRUE. B could be a compound. A salad with lettuce cheese seeds tomatoes broccoli and other vegetables is an example of a heterogeneous mixture.

I The product A2B shows the properties of substances A and B. A Elements but not compounds are pure substances. A SUBSTANCE is a material that has constant composition regardless of its source also said to be pure.

D All of these 4. NaClaq solution and milk is a homogeneous mixture has uniform. Heterogeneous mixtures but not homogeneous mixtures can have a variable composition.

E no correct response. Correct option is E A homogeneous mixture has the same uniform appearance and composition throughout. B A homogeneous mixture can have a variable composition.

A mixture can be separated by physical means. C Pure substances cannot have a variable composition. D All of these Ans.

In a compound containing copper and sulfur physical methods can be used to separate the substances present. B Compounds are composed of two or more elements in fixed proportions. D more than one correct response E no correct response.

N a C l a q solution and milk is a homogeneous mixture. The substances have fixed boiling and melting points 4. B A pure substance can never be separated into simpler pure substances using chemical means.

Only one substance present-pure water and only pure water. For example water always has the formula H2O sodium chloride common table salt always has the formula NaCl and. D more than one correct response.

A must be an element.

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