Answer:
How do chemists model the valence electrons in metal atoms? The valence electrons of metal atoms can be modeled as a sea of electrons. ... Why are alloys more useful than pure metals? Alloys are important because their properties are often superior to those of their component elements.
Explanation:
Answer:
Atom may be defined as the smallest particle of an element which does not exist free in nature but takes part directly in chemical combinations.
Atom of any element is represented by the symbol of that element. For example, hydrogen atom is represented by H, sodium atom is represented by Na, etc.
Molecule may be defined as the smallest particle of an element or compound which exists free in nature but does not participate directly in chemical combinations.
Molecule of any substance is represented by their molecular formula. For example, water molecule is represented by H2O. It tells that each water molecule contains two atoms of hydrogen and one atom of oxygen.
Answer:
Q1) solids are strong, gasses are weak
Explanation:
- Solids are Tightly packed molecule with no gap or space in between.
- Gasses are loosely packed and move freely in our atmosphere.
- Examples of solids are Wood, steel, plastic etc
- Example of gasses are oxygen, Carbon dioxide, nitrogen
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