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Gr 9 Science
Periodic Table & Review of Mass and Matter
Question | Answer |
---|---|
A column in the periodic table ; elements share similar properties | element group |
A characteristic or description of a substance that may help to identify it | is a physical property. |
A column in the periodic table ; elements share similar properties | element group |
An element on the left side of the periodic table | is metal |
An element on the right side of the periodic table is | a non-metal. |
A property that is not measured but involvesd the senses is | qualitative. |
An element that has properties of metals and non metals | metalloid |
Height, mass, volume, soluability, density have a numerical value and are | quantitative |
The smallest piece of an element | atom |
characteristic of a substance when it reacts with another substance and a new one is formed | chemical property |
a change that involves the creation of a new substance; can be identified by a colour change, bubbles of gas, heat, light, or a precipitate | chemical change |
the sum of the positive and negative charges of an atom | ionic charge |
ion with more protons than electrons | positively charged ion |
ion with more electrons than protons | negatively charged ion |
a compound that has an ionic charge (e.g. nitrate, sulfate, hydroxide) | polyatomic ion |
compound formed when positive and negative ions join together; generally a metal and a non-metal | ionic compound |
a sour substance that dissolves in water, conducts electricity and turns blue litmus red | acid |
a bitter substance that dissolves in water, conducts electricity, turns red litmus blue, and feels slippery | base |
an acid and a base react to form an ionic compound (called a salt) and water | neutralization reaction |
ionic compound formed as a product of a acid/base neutralization reaction | salt |
a weak base used to neutralize stomach acids | antacid |
when two or more substance interact, forming new substances | chemical reaction |
a substance present at the beginning of a chemical reaction | reactant |
a substance produced by a chemical reaction | product |
describes a chemical reaction using the names of reactants and products | word equation |
describes a chemical reaction using the chemical formulas of reactants and products; includes the state that each substance is in | chemical equation |