Physical changes: breaking sticks, boiling the water
chemical changes: lighting the fire
(Breaking the wood does not change the substance of the wood , therefore it's a physical change. Water changing between solid, liquid, and gas form is always a physical change.)
I would believe it’s B sorry if it’s wrong
Answer:
For winter camping, you want a cold-weather sleeping bag that retains as much warmth as possible. Semi-rectangular and mummy-shaped bags are probably your best bet — because they are more form-fitting and have built-in hoods, they will maximize your heat retention during cold winter nights.
Answer:
The following is the relation between electric force and field
Explanation:
Electric force is the magnitude of electrostatic forces between two charges which is directly proportional to product of both charges and inversely proportional to the square of the distance between them.
Here k is the coulumb's constant.
Where as the electric field is the electric force per unit charge. It is the function of electric force. It is the vector quantity and its direction is taken radially inward or outward depending on the nature of charge.
Its equation is
Electric Field 
Electric Field units are in volts where as Electric force units are newtons.
An atom is made up of different parts. The main part of the atom is the nucleus, which contains protons and neutrons. The outside of the atom is made up of rings that contain electrons. The number of protons, neutrons and epectrons can be found next to the element in the periodic table. (sorry I was a little unsure what to say about matter)
