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Periodic Table
The Periodic Table
Question | Answer |
---|---|
What is the Periodic Table? | It's an organized chart of all the known elements in th e universe. |
What does the Periodic Table use to represent each element? | symbols |
How is the Periodic Table organized? | Elements are in order of their atomic number (usually above the element) |
What is the horizontal row called in the Periodic Table? | a period |
How many periods are on today's Periodic Table? | 7 |
How many groups are on today's Periodic Table? | 18 |
What is each vertical column called in the Periodic Table? | a group (elements in the same group are very similar) |
What is chemistry? | the study of matter, its properties and its changes |
What are properties of matter? | observations that are used to identify matter such as; color, shape, texture, mass, volume, temp., and density |
What is an element? | building blocks of matter |
What is an element made of? | one type of atom |
What is a compound? | If atoms bond together (like 2 hydrogen atoms bond to an oxygen atom to form water) also called a molecule |
What is a molecule? | Molecules are formed by the combination of two or more atoms. |
What are the three categories on the periodic table that you need to know? | metals, nonmetals and metaloids |
What is matter that shatters or breaks when pounded? | brittle |
What is it called when matter can be pounded into sheets? | malleable |
What is it called when electricity can flow through matter? | electrical conductor |
What is it called when electricity does not pass through something easily? | insulator |
What is luster? | The way matter reflects light from its surface. (shiny or dull) |
What are characteristics of metals? | shiny, conductive , malleable, ductile and varied Reactivity |
What are characteristics of nonmetals? | usually dull, poor conductivity, brittle, varied reactivity |
What are characteristics of metalloids? | Some are shiny, some dull semi-conductive (both electrical & thermal), semi-malleable, semi-ductile, varied reactivity |
What has organic compounds? | anything living |