Question | Answer |
In the modern periodic table, elements are organized by... | Atomic number |
What was special about Mendeleev's periodic table? | He left spaces for undiscovered elements |
How many periods are there in the modern periodic table? | 7 |
What is a period? | A horizontal row |
What is a group? | A vertical column |
Elements in a group have similar.... | Reactivity and other properties |
Non-metals are found on what part of the periodic table? | The upper right |
Metals are found on what part of the periodic table? | The lower left |
Semimetals or metalloids are found where on the periodic table? | On the zig zag that goes from upper left to lower right |
Group 17 is an element family called... | Halogens |
How many groups are there on the modern periodic table? | 18 |
What are some properties of metals? | Shiny, ductile, malleable, conduct electricity and heat |
What are some properties of non-metals? | Dull, brittle, do not conduct electricity |
What are the elements that have properties of both metals and non-metals called? | Metalloids or semi-metals |
Name some elements that are in the alkaline metal family | Lithium, sodium, potassium, rubidium, cesium |
What is the name of elements in group 2? | Alkaline earth metals |
What are the elements in group 18 called? | Noble gases |
What are the elements in the middle of the table (the d block) called? | Transition metals |