Answer:
different between Hologens and 0element
Explanation:
The reactivity of the elements decreases as you decent the group. This can be seen if we observe the reaction between halogens. Elements in the same group in this periodic table have similar chemical properties. Group 0 elements are unreactive nonmetal called the noble gases.
1. we used <u>Symbol</u> to represent an element.
2. The chemical formula of a molecule shows the <u>number and kind of atoms contained in the molecule</u>.
3. K (potassium) is the atom among the given choices.
4. CO (carbon - monoxide) is the molecule among given choices.
The answer would be true
Physical properties are characteristic that was not related to the chemical property such as color, density or boiling point. It should be same if the substance is the same. the difference in mass won't change it.
Mass and volume is the example of extensive property, so <span>10 gram of iron will have different extensive property than 20 gram of iron.</span>