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7th Grade Study Guid
7th Grade Study Guide
Question | Answer |
---|---|
The ease and speed with which an element or compound combines with other elements or compounds | reactivity |
the temperature at which a substance changes from a solid to a liquid | melting point |
the measurement on how much mass of a substance is contained in a given volume | denisty |
the temperature at which a substance changes from a solid to a gas | boiling point |
the ability for a substance to ignite and burn | flammabilty |
the Greek symbol used in expressing the acidity alkline of an element | pH |
the abilty of a substance to altar it's form but doesn't change intom a new substance | physical properties |
the ability or ease of a substanceto transmit heat and / or electricty | conductivity |
the abilty of a substance to change into a new substance or combine with a substance | chemical properties |
the average mass of one atom of an element. Mass is calculated by combining the mass of protons and neutrons | atomic mass |
a small, positively charged particle in the nucleus of an atom | proton |
the smallest particle of an element | atom |
the name given to particles that are smaller than the atom and make up the atom | subatomic |
a term sometimes used instead of using atomic mass | atom weight |
the center of the atom with no electrical charge | nucleus |
the number which tells you how protons and electrons are found in an atom | atomic number |
a tiny, negatively charged particle the moves around the nucleus of an atom | electron |
a term that refers to the number and ARRANGEMENT OF ELECTRONS, NEUTRONS, AND PROTONS AN AN ATOM |