Mixture

Q.

Is air a mixture or a compound? Give three reasons for your answer.

Q.

Milk is a heterogeneous mixture.

1. True

2. False

Q.

Which compound is used in photography?

1. 

2. 

3. 

4. 

Q.

Air is a mixture of gases. Give reasons.

Q. What is a heterogeneous mixture?

Q.

Is air a homogenous or heterogeneous mixture?

Q.

Explain the following giving examples. suspension

Q. A mixture of two immiscible liquids can be separated by ___________.

1. Filtration
2. Distillation
3. Centrifugation
4. Separating funnel

Q.

Is wood is a heterogeneous mixture? Why?

Q.

List five characteristics by which compounds can be distinguished from mixtures.

Q.

Give two reasons for supporting that brass is a mixture and not a compound.

Q.

(a) What is a mixture? Give two example of mixtures.

(b) What is meant by (i) homogeneous mixtures, and (ii) heterogeneous mixtures? Give two examples of homogeneous mixtures and two of heterogeneous mixtures.

(c) What is the other name of homogeneous mixtures?

Q.

Give two reasons for supposing that water is a compound and not a mixture.

Q. Classify the following mixtures as homogeneous or heterogeneous: (a)Tincture of iodine (b) Smoke (c) Brass (d) Sugar solution

Q.

Which mixture is labelled incorrectly?

1. Homogeneous: salt dissolved in water

2. Homogeneous: gasoline

3. Homogeneous: aqueous solution of alcohol

4. Heterogeneous: oxygen and nitrogen in a scuba tank

Q.

Define a mixture. Give two points of evidence to show that sugar solution is a mixture.

Q.

A salad is an example of a _ mixture with composition.

Which row completes the given statement?

1. 

2. 

3. 

4. 

Q.

Is water a solution?

Q. Water contains two components but still it is a pure substance give two reasons

Q.

Two chemical species $\mathrm{X}$ and $\mathrm{Y}$ combine together to form a product $\mathrm{P}$ which contains both $\mathrm{X}$ and $\mathrm{Y}$, $\mathrm{X}+\mathrm{Y}\to \mathrm{P}$. $\mathrm{X}$ and $\mathrm{Y}$ cannot be broken down into simpler substances by simple chemical reactions. Which of the following concerning the species $\mathrm{X}$, $\mathrm{Y}$, and $\mathrm{P}$ are correct?

(i) $\mathrm{P}$ is a compound

(ii) $\mathrm{X}$ and $\mathrm{Y}$ are compounds

(iii) $\mathrm{X}$ and $\mathrm{Y}$ are elements

(iv) $\mathrm{P}$ has a fixed composition

1. (i), (ii) and (iii)

2. (i), (ii) and (iv)

3. (ii), (iii) and (iv)

4. (i), (iii) and (iv)

Q. Water is considered a compound and not a mixture why?

Q.

State if the following statements are true or false. Correct the false statement.

Air is invisible, tasteless and odourless.

1. True
2. False

Q. Air is composed of 78% nitrogen and 21% oxygen. Hence, it is a compound.

1. True
2. False

Q. What kind of mixture is ink+ water

Q.

Why is air called a mixture?

Q.

Which of the following will form a homogeneous mixture?

1. Salt and water

2. Oil and water

3. Chalk powder and water

4. Sand and water

Q.

State two reasons for supposing that brass is a mixture and not a compound.

Q.

Which of the following is not an example of heterogeneous mixture?

1. Oil in water

2. Gun powder

3. Salt in water

4. Mixture of sulphur powder and iron fillings

Q.

Which of the following is a mixture ?

Salt, Air, Water, Alum, Sugar

Q. What is the difference between homogeneous mixture and solution?
I​​​​f there is no difference then why are two different terms being used.