Use the following information about three compounds A , B and C to answer the question. Outline the following concept: Homogeneous mixture

A mixture is a combination of two or more substances that mix together without any chemical reaction taking place. A homogeneous mixture is a mixture in which the composition is uniform throughout the mixture. For example, sugar dissolved in water, mixture of gases in air, etc.

Use the following information about three compounds A , B and C to answer the question. Outline the following concept: Heterogeneous mixture

A mixture is a combination of two or more substances that mix together without any chemical reaction taking place. A heterogeneous mixture is a mixture in which the composition is non-uniform throughout the mixture. For example, a mixture of sand and sugar, salt and pepper, milk, etc.

Use the following information about three compounds A , B and C to answer the question. State the most appropriate method for the physical separation of a mixture of compounds A , B and C . Justify your choice of technique.

Distillation is the most appropriate separation technique. Compound B has the lowest boiling point 78 . 4 ° C and will be the first fraction to be collected. Compound A has second highest boiling point 100 ° C and will be the second fraction to be collected, and compound C has the highest boiling point 1413 ° C . The rate of heating of the flask should be slow and controlled so that the separation is accurate and the purity of Compound A and B is high. After compound A and B are removed, compound C will remain behind in the flask.

Use the following information about three compounds A , B and C to answer the question. Determine the state of matter for each of the compounds A , B and C , if the mixture is at a temperature of 80 ° C . Explain your reasoning.

Melting point is the particular temperature at which solid converts into liquid and boiling point is the particular temperature at which liquid converts into gas. If the mixture of the compounds A , B and C is at 80 ° C , compound A will be in liquid state. Since its melting point is 5 ° C and boiling point is 100 ° C . compound B will be in gaseous state. Since its melting point is - 114 ° C and boiling point is 78 . 4 ° C . compound C will be in solid state. Since its melting point is 801 ° C and boiling point is 1413 ° C .

Use the following information about three compounds A , B and C to answer the question. Predict the likely composition of substance C . Support your prediction with evidence.

Melting point is the temperature at which solid converts into liquid and boiling point is the temperature at which liquid boils converts into vapour. The melting point of compound C is 801 ° C and boiling point is 1413 ° C . We can see here that the melting and boiling point of the compound is very high. This compound is a good conductor in its solution form. Therefore, this compound is a solid with high electrostatic force of attraction between cation and anion. By knowing the literature, the compound is expected to be Sodium chloride.

Use the following information about three compounds A , B and C to answer the question. Identify the type of mixture containing compounds A , B and C . Explain your reasoning.

A mixture is a combination of two or more substances that mix together without any chemical reaction taking place. From the given data of mixture of compounds A , B and C , the following observation can be made: compound A is a solid which has low melting point and boiling point. compound B is liquid which has low melting point and is volatile at 78 ° C compound C is a solid with a high melting and boiling point. all the compounds are water-soluble and hence form a uniform solution. Hence, these form a homogeneous mixture. A homogeneous mixture is a mixture in which the composition is uniform throughout the mixture.

MEDIUM

MYP:4-5

IMPORTANT

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Using your knowledge of chemistry, examine the products of the reaction between iron (III) nitrate and sodium carbonate and predict the composition of the insoluble salt. Explain your reasoning.

Important Questions on Form

MEDIUM

MYP:4-5

IMPORTANT

MYP Chemistry A concept-based approach Years 4&5>Chapter 6 - Form>Experiment>Q 5

Explain how could you separate out sand from a mixture of salt and sand?

EASY

MYP:4-5

IMPORTANT

MYP Chemistry A concept-based approach Years 4&5>Chapter 6 - Form>Summative assessment>Q 1

Use the following information about three compounds $A, B$ and $C$ to answer the question.

Question Image

Outline the following concept:

Homogeneous mixture

EASY

MYP:4-5

IMPORTANT

MYP Chemistry A concept-based approach Years 4&5>Chapter 6 - Form>Summative assessment>Q 1

Use the following information about three compounds $A, B$ and $C$ to answer the question.

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Outline the following concept:

Heterogeneous mixture

HARD

MYP:4-5

IMPORTANT

MYP Chemistry A concept-based approach Years 4&5>Chapter 6 - Form>Summative assessment>Q 2

Use the following information about three compounds $A, B$ and $C$ to answer the question.

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State the most appropriate method for the physical separation of a mixture of compounds $A, B$ and $C$ . Justify your choice of technique.

HARD

MYP:4-5

IMPORTANT

MYP Chemistry A concept-based approach Years 4&5>Chapter 6 - Form>Summative assessment>Q 3

Use the following information about three compounds $A, B$ and $C$ to answer the question.

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Determine the state of matter for each of the compounds $A, B$ and $C$ , if the mixture is at a temperature of $80 ° C$ . Explain your reasoning.

MEDIUM

MYP:4-5

IMPORTANT

MYP Chemistry A concept-based approach Years 4&5>Chapter 6 - Form>Summative assessment>Q 4

Use the following information about three compounds $A, B$ and $C$ to answer the question.

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Predict the likely composition of substance $C$ . Support your prediction with evidence.

HARD

MYP:4-5

IMPORTANT

MYP Chemistry A concept-based approach Years 4&5>Chapter 6 - Form>Summative assessment>Q 5

Use the following information about three compounds $A, B$ and $C$ to answer the question.

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Identify the type of mixture containing compounds $A, B$ and $C$ . Explain your reasoning.

MEDIUM

MYP:4-5

IMPORTANT

MYP Chemistry A concept-based approach Years 4&5>Chapter 6 - Form>Summative assessment>Q 6

The graph illustrates the changes in state for myristic acid, a saturated fatty acid, as it is heated. Saturated acids have been linked to high levels of cholesterol in humans and an increases chance of coronary heart disease.

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From your analysis of the graph, explain what is happening between $B$ and $C$ .

Using your knowledge of chemistry, examine the products of the reaction between iron (III) nitrate and sodium carbonate and predict the composition of the insoluble salt. Explain your reasoning.

Important Questions on Form

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