Science1 Crossword
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
                                                    
 
 
Down: 1) a negatively charged particle outside of the nucleus of an atom4) the weight of an atom - determined by the total number of protons and neutrons5) a pure substance that is made up of a single kind of atom6) A physical change that occurs as the result of a change in temperature. Increase in temperature may cause a solid to chnage to the liquid state and a liquid to change to a gas state. A decrease in temperature may cause a gas to change to a liquid and a liquid to change to a solid.7) Molecules are strongly linked: shape & volume are both fixed12) the smallest part of a covalent compound that still has all the properties of that compound15) the temperature at which a liquid becomes a solid - freezing point and melting are the same for a given substance - freezing point is a physical property16) characteristics that can be observed without changing the composition of a substance17) substance composed of negatively charged atoms and positively charged atoms (electrons are lost or gained during a chemical reaction): metal and non-metals18) atoms of an element that have the same number of protons but different numbers of neutrons19) definite volume, takes the shape of its container; weak bonds; molecules are loosely packed21) an arrangement of symbols and numbers that describes one molecule of a compound24) change in state of matter from a liquid to a gas; energy is added26) strong attraction between two atoms28) the temperature at which a solid becomes a liquid - the melting point and the freezing point are the same for a given substance - melting point is a physical property29) change in state of matter from a solid to liquid; energy is added in32) Energy that moves from warmer to cooler regions; more matter means more heat energy33) the smallest unit of an element consisting of protons and neutrons in a dense central nucleus orbited by a number of electrons.35) no definite shape, no definite volume, and no bonds36) The measurement of the amount of matter an object contains; usually measured in variations of grams.40) no definite shape and no definite volume; no bonds; molecules move in all directions Across: 2) the central part of an atom containing protons and neutrons.3) changes such as changes in shape, size, or state, appearance, or dissolving - during a physical change, a substance does NOT become a different substance8) substance formed when atoms of two or more elements join together9) arrangement of all the elements in a table according to their atomic number10) This number tells the number of protons in the nucleus of an atom.11) characteristic that determines how a substance will react with other substances.13) Has mass and takes up space; made up of atoms and molecules14) the temperature at which a substance begins to boil - boiling point is a physical property of matter20) the change from one state of matter to another22) the change in the state of matter from a solid directly to a gas23) A change of a substance that produces a new substance with new properties25) a substance that always has the same composition and properties - elements and compounds are pure substances27) Atom or group of combined atoms, that has a positive or negative charge30) the change of state froma gas to a solid. The opposite of sublimation31) One letter (capital) or two-letter (cap. and lower-case) representation of an element34) having no charge37) an organic compound that consists mainly of a long chain of carbon atoms; the type of compound used to make rubber balls and plastic38) chemical that changes color when mixed with an acid or base39) uncharged particle in the nucleus of an atom.41) positively charged particle in the nucleus of an atom42) Physical form that matter takes: four types of matter are solid, liquid, gas, and plasma
 

 

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