Which of the following is a chemical change?

a. ice melting

b. ice being carved

c. water boiling

d. water breaking down into hydrogen and oxygen

Is there any terminal identification mark for rheostat as positive, negative?

Calculate the power of convex lens of focal length 20cm

Which statements accurately describe elements? Elements are made up of two or more types of atoms. Elements are made up of only one type of atom. Each element has a unique chemical symbol. Þ Elements can be identified by their àtomid number.

What are mechanical waves?

Matierial that does not allow an eltrice current pass through it easily

What is the value of 9682 when rounded to three significant figures

Why do atoms move at different speeds depending on wether they are liquids or solids

What are the arrangement of resistors in series

A cell provides 6 V to an LDR. The current through this LDR is measured and is found to be 3 A. What is the resistance of the LDR?

A car travels along eastward with a constant velocity. the magnitude of the acceleration of the car is