Term
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Definition
| freezing point/melting point of water |
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Term
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Definition
| boiling point/condensation point of water |
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Term
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Definition
| are metals with only one valence electron (group 1) |
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Term
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Definition
| are metals with two valence electrons (group 2) |
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Term
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Definition
| the smallest particle of an element. In their stable state atoms are neutral, in that6 they have the same number of positive protons as they do negative electrons |
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Term
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Definition
| the number of protons in the nucleus of the atom |
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Term
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Definition
| a change in the bonds between the atoms of compounds |
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Term
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Definition
| energy that is stored in chemical bonds |
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Term
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Definition
| represents a chemical reaction |
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Term
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Definition
| the types of elements and numbers of atoms of each element in a substance (H2CO3) |
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Term
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Definition
| characteristics that describe how a substance behaves in chemical reactions, heat of combustion, precipitate, reactivity with water, PH, and electromotive force |
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Term
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Definition
| one or more substances change to produce one or more new substances with different chemical properties |
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Term
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Definition
| an abbreviation of the name of an element |
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Term
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Definition
| The number before the substance or compound (5NaCl) |
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Term
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Definition
| formed when the atoms of two or more elements combine to form a new substance (NaCl) |
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Term
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Definition
| the movement of electricity through matter |
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Term
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Definition
| a variable that a scientist keeps the same throughout an investigation |
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Term
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Definition
| an investigation that test only one factor at a time |
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Term
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Definition
| observations or measurements that are made during a controlled experiment |
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Term
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Definition
| the change that occurs in response to a change in the independent variable |
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Term
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Definition
| is a subatomic particle with an electrical change of -1 found outside of the nucleus |
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Term
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Definition
| a particle that is made up of two or more atoms (O2) |
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Term
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Definition
| A chemical reaction that takes in energy during reaction |
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Term
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Definition
| a chemical reaction that released energy during reaction |
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Term
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Definition
| a set of elements in one row in the periodic table. These elements with similar energy levels |
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Term
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Definition
| a state of matter with no defiant shaper or volume |
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Term
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Definition
| a set of elements in one column in the periodic table. Elements in the same group have similar properties |
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Term
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Definition
| a statement that can be tested by conducting a controlled experiment |
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Term
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Definition
| the factor that a scientist changes during an investigation |
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Term
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Definition
| an atom that has gained or lost electrons which gives it a charge |
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Term
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Definition
| an element contains the same number of protons but a different number of neutrons |
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Term
| Law of Conservation of Mass |
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Definition
| states that no mass can be created or destroyed in a chemical reaction |
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Term
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Definition
| a state of matter with no defiant shape but a defiant volume |
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Term
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Definition
| the ability to bend, able to be shaped or formed |
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Term
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Definition
| can be measured with a triple beam balance |
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Term
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Definition
| the number of protons and neutrons in the nucleus of the atom |
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Term
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Definition
| anything that has mass and occupies space. All matter is made up of elements, compounds or a mixture of elements and compounds |
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Term
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Definition
| a category of elements characterized by a shiny surface, the ability to be easily shaped, and high conductivity of electricity and heat. |
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Term
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Definition
| a category of elements that share some properties with metals and some with non metals, along the zigzag line on the periodic table of elements |
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Term
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Definition
| formed when the atoms of two or more elements combine but do not form a new substance (sugar water) |
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Term
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Definition
| made of two or more of the same element |
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Term
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Definition
| is a subatomic particle located in the center of the atom, with no charge |
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Term
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Definition
| a category of elements that have full valence electrons |
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Term
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Definition
| a category of elements characterized by a brittle nature, little to no luster, and poor conductivity of electricity and heat. |
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Term
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Definition
| the center of an atom that contains protons with a positive charge and neutral neutrons |
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Term
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Definition
| when you gather information using any of your five senses |
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Term
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Definition
| an arrangement of elements in a table according tot their atomic numbers and physical properties |
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Term
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Definition
| a change in the states of matter |
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Term
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Definition
| characteristics that can be observed or measured without changing the identity of matter, color, smell, freezing point, boiling point, melting point, infra-red spectrum, attraction (paramagnetic) or repulsion (diamagnetic) to magnets, opacity, viscosity and density. |
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Term
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Definition
| a solid material that can form during a chemical reaction |
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Term
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Definition
| the substance or compound at the end of a chemical equation or reaction |
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Term
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Definition
| is a subatomic particle with an electrical charge of +1 |
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Term
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Definition
| the substance or compound that gets consumed during a chemical equation or reaction |
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Term
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Definition
| includes various methods and procedures that scientist use to answer questions and solve problems |
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Term
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Definition
| a state of matter with a defiant shape and volume |
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Term
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Definition
| a physical property of a substance, the amount of heat that must be absorbed or lost for 1 gram of the substance to change its temperature by 1 oC |
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Term
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Definition
| the number after the substance or compound (H2O) |
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Term
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Definition
| elements that have valance electrons at two different energy levels (groups 3-12) |
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Term
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Definition
| the outermost electrons in an atom |
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Term
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Definition
| a factor that changes during an investigation |
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Term
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Definition
| can be measured by l x w x h or a graduated cylinder |
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