Chem

• Metals lose electrons during transfer
• The symbol of the element Iron is Fe
• Mendeleev is known for the creation of the first periodic table of elements
• The name of Group IA in the periodic table is Alkali
• The vertical column of elements grouped together is called a family
• Beryllium belongs to the Alkaline group
• Group IIA elements have 2 valence electrons
• Silicon is a semimetal
• Atomic radius decreases from left to right and increases from top to bottom
• The third shell can hold 18 electrons
• Iron is a non-metal
• An s subshell can hold 2 electrons
• Electronegativity is the measure of an atom's ability to attract electrons
• Valence electrons are found on the outermost part and are involved in chemical bonding
• The electronic configuration of sodium is 1s2 2s2 2p6 3s1
• The filling of electron orbitals starts from the lowest energy level is the Aufbau Principle
• No two electrons in an atom can have the same set of four quantum numbers is the Pauli Exclusion Principle
• The orientation of the orbital is denoted by the Azimuthal quantum number
• NaCl undergoes ionic bonding
• Covalent bonding involves sharing of electrons
• An ionic bond is formed between a metal and non-metal and involves transferring of electrons
• The chemical name of the ionic compound NaCl is sodium chloride
• The chemical name of CO2 is carbon dioxide
• The force accounting for special properties of water like high latent heat and specific heat is hydrogen bonding
• Elements in a molecule with a difference in electronegativity are polar
• Question 52: The type of reaction involved in CH4 + 2O2 → CO2 + 2H2O is
• Question 49: The force accounting for the special properties of water like high latent heat and specific heat is
• Question 53: In a redox reaction, when the reactant gains electrons, it is
• Question 48: The elements in the molecule have difference in electronegativity
• Question 51: When a single substance splits into two products, the type of reaction that took place is
• Question 55: The formula giving the simplest whole-number ratio of the atoms in a compound is
• Question 50: The force present between an ion and a polar molecule is
• Question 58: A balanced chemical equation is
• Question 57: The correct coefficients to make the equation Fe + 3 O2 → Fe2 O3 balanced are
• Question 54: The product of an acid and base reaction is
• Question 56: It states that the total mass of the reactants must be equal to the total mass of the products
• Question 61: The value of Avogadro’s number is
• Question 62: The number of moles of H2O in 10 grams of H2O is
• Question 60: It is the fundamental quantity of the amount of substance
• Question 63: The term used for the mass of one mole of a substance is