The electronegativities of the two atoms play a part in determining what kind of bonds are formed. The main two types of chemical bonds are ionic and covalent. Covalent bonds are formed by atoms that share valence electrons and are most commonly formed between nonmetal atoms.
Their valance electrons are redistributed in ways that make the atoms more stable.
B) the hypothesis is tested extensively and competing hypothesis are eliminated
C) there are no other competing hypothesis
D) the hypothesis can be tested at least once
2) A preliminary untested explanation that tries to explain how or why things happen in the manner observed is a scientific ________.
A) law
B) theory
C) fact
D) hypothesis
Answer: Hope this helps :)
Explanation:
The kinetic molecular theory can be used to explain each of the experimentally determined gas laws. The pressure of a gas results from collisions between the gas particles and the walls of the container. Each time a gas particle hits the wall, it exerts a force on the wall. In the kinetic theory of gases, gas molecules move around in the most random way colliding and bumping into each other and then bouncing off in the opposite direction.
The molecules exert no intermolecular forces on each other and they have no potential energy associated with them in their motion.
Thus the energy is wholly kinetic.
The concept of pressure is explained in kinetic theory as a consequence of kinetic energy of gases. Let me explain it.
Consider an ideal gas (the ones with which kinetic theory is concerned) in a closed container.
Due to the troublesome motion of the gas molecules, they will collide with each other, some of them shall collide with the container walls and then bounce back and this process continues.
B) steel rusting
C) paper burning
D) wood decaying
A physical change changes the state on object is in, making the answer A) iron melting. Since it's melting, it's going from solid to liquid.