Question

A. Pure substance

B. homogeneous
C. distillation
D. mixture
E. 1502
F. intensive
G. decantation
H. extensive
I. solubility
J. 2 02

1. While preparing the ingredients she needs for cooking, Maria accidentally mixed cooking oil and water. In order to separate the two, she will have to perform __________________________.

2. Find the chemical formulas that will correctly balance the following chemical equations: CH4+
→CO2+2H2O
3. At sea level, the boiling point of water is 100°C regardless of how much water is present. This shows that boiling point is an _____________________ property.

4. Carbon dioxide is a gas that is important for photosynthesis. It is composed of the elements carbon and oxygen which cannot be separated through physical means. Carbon dioxide is a/an ___________________________.

5. Find the chemical formulas that will correctly balance the following chemical equations: 2C6H6+
→12CO2+6H2O
6. After adding 1 teaspoon of sugar to a cup of water and stirring, Denise noticed that the sugar completely dissolved into the water. This mixture is described as ________________________.

7. It has been found that at room temperature, a maximum of 35 g of salt can dissolve in 100 mL of water. This property of salt is known as _________________________.

8. The air we breathe is composed of 78% nitrogen, 21% oxygen, and 1% of other gases. This describes that the air we breathe is a _____________________.

9. The volume of a liquid such as water is measured using equipment like a graduated cylinder. In order to increase the volume, more of the liquid has to be added. This shows that volume is an ___________________ property.

10. Monique was given a homogeneous solution of acetone and water by her laboratory instructor. She was tasked to separate the two components from the mixture. Monique knows that acetone has a lower boiling point than water. She decides to perform _______________________.

Answer 1

1. Maria will have to perform distillation to separate the cooking oil and water mixture. 4. Carbon dioxide is a pure substance composed of carbon and oxygen. 6. The mixture of sugar and water where sugar dissolves completely is a homogeneous mixture or a solution.

Step-by-step explanation:

1. In order to separate the cooking oil and water mixture, Maria will have to perform distillation.

4. Carbon dioxide is a gas that is composed of the elements carbon and oxygen, and it cannot be separated through physical means. Therefore, carbon dioxide is a pure substance.

6. The mixture of sugar and water, where the sugar completely dissolved, is described as a homogeneous mixture or a solution.

7. The property of salt that limits its solubility in water to a maximum of 35 g in 100 mL is known as solubility.

8. The air we breathe, which is composed of different gases, is a homogeneous mixture or a solution.

10. To separate the acetone and water mixture, Monique will perform distillation due to the difference in boiling points between acetone and water.

Answer 2

1. decantation

2. 2O₂

3. intensive

4. Pure Substance

5. 15O₂

6. homogenous

7. Solubility

8. mixture

9. extensive

10. distillation