10 Chemical bond that forms between nonmetal atom and a metalloid atom. C. Metallic bond D. Hydrogen bond A. Ionic bond B. Covalent bond 11 Which element is the best conductor of electricity? C. Silver A. Copper B. Gold D. Lead 12 Metals can be stretched or spun into thin wire. What is this property called? C. Conductivity D. Ductility A. Tensile strength B. Malleability Metals can be flattened and shaped by pounding or molding. What is this property 13 called? A. Tensile strength B. Malleability 14 Which is NOT a property of most transition metals? A. Flammability B. Silvery color C. Conductivity D. Ductility A. Hydrogen B. Boron Which element's atoms will not form an octet, but will be stable in a covalent 15 compound with six valence electrons. C. High density D. High melting point temperature A. Hydrogen B. Boron C. Lithium D. Nitrogen Which element's atoms will not form an octet, but will be stable in a covalent 16 compound with two valence electrons. C. Lithium D. Nitrogen
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
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