| Question |
 |
|
| Answer |
|
|
| What is an element? |
substance that can't be broken down into something else. (Pure) |
| Why are elements important to living things? |
The elements ability to form bonds that make the compounds needed for living things. |
| What percentages of elements are used by living things? |
25% |
| What are the elements of life? |
Carbon, Hydrogen, Oxygen, and Nitrogen |
| What are the molecules of life? |
DNA, Protein, Sugars, and Fats. |
| What is the smallest particle of an element? |
Atoms |
| What are the basic building blocks of matter? |
Atoms |
| What controls the reactivity of atoms? |
The STRUCTURE of an atom. |
| What are the three parts of an atom? |
Proton, Neutron, Electron. |
| Which atomic particle is positive? |
Proton |
| Which atomic particle doesn't have a charge? |
Neutron |
| Where is the first energy level located in an atom? |
outside of atom |
| How many electrons can fit in the first energy level? |
2 |
| How many electrons can fit in the second evergy level? |
8 |
| How are elements organized on the periodic table? |
by their charaistics |
| What are the three general types of elements? |
metals, non-metals, metalloids |
| What information can be learned from the atomic number of an element? |
number of protons and electrons |
| What is unique about an atoms electron and proton number? |
They are always the same. |
| What is atomic weight? |
Weight of one atom calculated by adding the protons together. |
| How are proton numbers calculated for an atom? |
Atomic number. |
| How are electron numbers calculated for an atom? |
atomic number. |
| How are neutron numbers calculated for an atom? |
atomic weight
-atomic number
---------------
neutron |
mr. charles11
