vocabulary from chapter 1 of the Holt mcDougal Modern Chemistry textbook
Terms : Hide Images
| 1158247284 | Chemistry | the study matter, the changes it undergoes, and the energy accompanying these changes | 1 | |
| 1158247285 | chemical | any substance that has a definite composition | 2 | |
| 1158247286 | atom | the smallest component of an element having the chemical properties of the element | 3 | |
| 1158247287 | Element | a pure substance that cannot be broken down into simpler, stable substances and is made of one type of atom | 4 | |
| 1158247288 | mass | a measure of the amount of matter | 5 | |
| 1158247289 | matter | anything that has mass and takes up space | 6 | |
| 1158247290 | compound | a substance made from the atoms of two or more elements that are chemically bonded | 7 | |
| 1158247291 | Extensive Properties | depend on the amount of matter that is present ex. volume, mass, and the amount of energy | 8 | |
| 1158247292 | physical property | a characteristic that can be observed or measured without changing the identity of the substance | 9 | |
| 1158247293 | intensive properties | do not depend on the amount of matter ex. melting point, boiling point, density | 10 | |
| 1158247294 | Physical Change | a change in a substance that does not involve a change in the identity of the substance | 11 | |
| 1158247295 | change of state | a physical change of a substance from one to another | 12 | |
| 1158247296 | solid | definite volume and definite shape | 13 | |
| 1158247297 | liquid | definite volume no definite shape | 14 | |
| 1158247298 | gas | neither definite volume nor definite shape | 15 | |
| 1158247299 | plasma | a high temperature physical state in which atoms lose most of their electrons | 16 | |
| 1158247300 | chemical property | a substance's ability to undergo changes that transform it into different substances | 17 | |
| 1158247301 | chemical change | (reaction) a change in which one or more substances are converted into different substances | 18 | |
| 1158247302 | reactants | the substances that react in a chemical change | 19 | |
| 1158247303 | products | the substances formed by the chemical change | 20 | |
| 1158247304 | mixture | a blend of two or more kinds of matter, each of which retains its own identity an properties | 21 | |
| 1158247305 | homogeneous | mixtures that are uniform in composition (solutions) | 22 | |
| 1158247306 | heterogeneous | mixtures that are not uniform | 23 | |
| 1158247307 | pure substance | a fixed composition with each sample having exactly the same properties and composition | 24 | |
| 1158247308 | groups/ families | the vertical columns of the periodic table | 25 | |
| 1158247309 | periods | horizontal rows of the elements in the periodic table | 26 |
