Answer:
6 Electrons r smaller than a proton or a neutron
Gold, as it has the unique characteristic yo
Answer:the medication would not last as long
Explanation:
Because of the desolving of the tablet so quickly it would
A gas with more kinetic energy exerts more pressure.
Explanation:
A gas that has more kinetic energy has faster particles movement. When these molecules move at a faster speed, they exert more pressure on the surface with which they collide.
Here, molecular speed of gas that exerts 1.0 atm of pressure is less than that which exerts 1.5 atm of pressure.
Kinetic molecular theory states that molecules in a gas are continuously in motion show elastic collisions.
The pressure exerted by a gas is directly proportional to the mean-square velocity of gas molecules.
Answer: The correct option is B.
Explanation: Pure substances are defined as the substances which are made up of one one type of atom or a molecule. Example: Iron (Fe), etc.
Option A: These substances can be cut into smaller pieces because only the size of the substance is changing.
Option B: All the pure substances are made up of atoms and group of atoms known as molecules. So, this is common to all the pure substances.
Option C: These substances can be mixed with other substance. For example: Iron can be mixed with another Copper.
Option D: These substances when undergoing a chemical reaction will change its chemical composition.
Hence, the correct option is B.