Question | Answer |
What is the center of an atom called? | nucleus
|
What subatomic particles are in the nucleus of an atom? | protons and neutrons
| What is the atomic number of Oxygen? | 8
| The number of protons in an atom is the same as the number of ___? | electrons
| How many electrons can the first electron shell of an atom hold? | 2
| The atomic mass of an element is the number of ___ + the number of ___. | protons neutrons
| What is the atomic mass of aluminum? | 27
| What element has atomic number 2? | helium
| What do elements combine to create a molecule of water? | oxygen hydrogen
| How many electrons can the second shell of an atom hold? | 8
| How many electrons can the third shell of an atom hold? | 8
| What is the chemical symbol for iron? | Fe
| What is the atomic number of Calcium? | 20
| How many protons are in an atom of Nickel? | 28
| What element is K? | Potassium
| How many electrons are in an atom of Argon? | 18
| How many neutrons are in an atom of Titanium? | 26
| What is the atomic mass of Tin? | 119
| How many protons are in an atom of Copper? | 29
| How many electrons are in an atom of Radon? | 54
| What is the atomic number of Silicon? | 14
| What is the chemical symbol for Calcium? | Ca
| What element is Na? | Sodium
| The formula for salt is NaCl. What 2 elements make up a molecule of salt? | Sodium Chlorine |