1656983
Description
Flashcards by mathilde_ndoye, updated more than 1 year ago
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Created by mathilde_ndoye
over 9 years ago
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| Question | Answer |
| ATOMS HAVE WHAT | PROTONS NEUTRONS ELECTRONS |
| WHAT IS THE RELATIVE CHARGE OF PROTON NEUTRON ELECTRON | PROTON = +1 NEUTRON = 0 ELECTRON = -1 |
| WHAT IS THE RELATIVE MASS OF THESE | PROTON= 1 NEUTRON =1 ELECTRON = NEGLIGIBLE |
| INSULATORS CAN BE CHARGED BY WHAT ? | FRICTION |
| WHAT CAN SOME MATERIALS DO BETTER THAN OTHERS | HOLD ELECTRONS - SOME HOLD EASILY OTHERS LOOSE EASILY |
| WHAT DO METALS DO IN TERMS OF ELECTRONS | THEY CONDUCT |
| LIKE CHARGES …. | REPEL |
| CAN PROTONS BE TRANSFERRED EXPLAIN YOUR ANSWER | NO THEY CANNOT ….. BECAUSE THEY ARE FIXED IN THE NUCLEUS OF ATOMS |
| WHAT HAPPENS WHEN A MATERIAL GAINS ELECTRONS | IT BECOMES NEGATIVLEY CHARGED |
| IF A MATERIAL LOOSES ELECTRONS ….. | IT IS LEFT WITH AN EQUAL POSITIVE CHARGE |
| EXPLAIN EARTHING | WHEN ELECTRONS MOVE FROM YOU TO GET TO THE EARTCH |
| HOW CAN YOU AVOID DANGER WHEN DEALING WITH STATIC ELECTRICITY | PROVIDE THE ELECTRICITY WITH A PATH TO THE GROUND … THIS STOPS ANY SPARKS FROM CAUSING A FIRE |
| WHAT MUST ALL AIRCRAFTS DO ? | CONNECT THE PLANE TO THE GROUND WHEN REFUELING. THIS STOPS ANY SPARKS FROM CAUSING A FIRE |
| EXPLAIN WHY STATIC IS USEFUL FOR PAINTING AND CROP SPRAYING | ALLOW THAT PRODUCT TO STICK TO THE MATERIAL YOU ARE SPRAYING |
| HOW DOES THIS WORK WITH PAINTING- | - CONNECT THE PAINT SPRAY NOZZEL TO A POSITIVE TERMINAL -THE PAINT DROPLETS THEN PICK UP THESE POSITIVE ELECTRONS -THE POSITIVLY CHARGED PAINT DROPLETS REPEL EACH OTHER -GIVE THE OBJECT A NEGATIVE CHARGE AND THE CHARGE DROPLETS ARE ATTRACTED TO THIS |
| EXPLAIN AN ELECTRIC CURRENT | THE RATE OF FLOW OF CHARGE |
| WHAT DOES THIS MEAN | HOW MUCH CHARGE FLOWS PER SECOND |
| WHAT IS THE CURRENT IN METALS | A FLOW OF ELECTRONS |
| EXPLAIN ELECTRONS IN A CURRENT | ELECTRONS ARE FREE TO MOVE BUT NOT PROTONS THESE ARE' LOCKED AWAY' IN THE NUCLEUS….. |
| *NEGATIVE CHARGES FLOW FROM ONE TERMINAL AND ARE ATTRACTED TOWARDS THE POSITIVE TERMINAL * | :) |
| WHAT DOES DC STAND FOR ? | DIRECT CURRENT - FOLLOW ONE DIRECTION |
| A.C | ALTERNATING CURRENT CHANGES DIRECTIONS |
| CHARGE = CURRENT x TIME | FORMULA WILL BE IN EXAM |
| THE ATOMIC NUMBER IS ______ | THE NUMBER OF PROTONS |
| HOW MANY NEUTRONS ARE THERE THEN + EXPLAIN HOW TO WORK IT OUT | 27 - 13 (MASS NUMBER - NMBER OF PROTONS ) NUMBER OF NEUTRONS = 13 |
| IF THERE ARE 13 PROTONS HOW MANY ELECTRONS | 13 |
| WHAT ARE ROWS AND COLUMNS CALLED ? | PERIODS GROUPS |
| PERIODS GO IN ORDER OF ATOMIC MASS AND ... | GROUPS IN SIMILAR PROPERTIES |
| DEFINE AN ISOTOPE | ATOMS OF AN ELEMENT WITH THE SAME NUMBER OF PROTONS BUT WITH DIFFERENT NUMBERS OF NEUTRONS |
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