Question

Answer the following questions:

1. Write the chemical formula and name the elements present in the following compounds.

a) carbon dioxide b) water.

2. Define compound.


3. What are derived quantities?

4. Write down the formula used to find the volume of a cylinder.

5. Numerical problem: The dimension of a school playground is 900m × 400m. Find the area of the ground.

6. Write any two difference between metals and non metals.

Draw and label:

Area of Triangle diagram and formula.​

Answer 1

Answer:

1.

(a) carbon dioxide = CO2 = carbon , oxygen.

(b)water = H2O = hydrogen , oxygen

2.

compounds are the pure substance which can be broken down into simpler substance by ordinary

chemical changes.

3.

metre, kilogram, second,ampere, displacement, velocity.

4.

1000 M3

5.

3,60,000m

6.

1. metal have a lustre.

2. conduct heat and electricity.

1. nonmetals have no lustre.

2.are poor conductors of heat and electricity.

hope it helps you