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SCIENCE TEST 7
CHEMISTRY
| Question | Answer |
|---|---|
| THE SUM OF THE NUMBER OF PROTONS AND NEUTRONS IN AN ATOM | ATOMIC MASS |
| SPECIAL MACHINES THAT SMASH ATOMS | PARTICLE ACCELERATORS |
| RUSSIAN CHEMIST WHO DEVELOPED THE PERIODIC TABLE TO CLASSIFY KNOWN ELEMENTS | DMITRI MENDELEEV |
| SUBSTANCES CONTAINING ONLY ONE KIND OF ATOM | ELEMENTS |
| METALS, SEMI-METALS, ALKALI METALS, AND NON METALS ARE EXAMPLES OF CLASSIFYING ELEMENTS INTO..... | CATAGORIES |
| T/F. ELECTRONS HAVE A POSITIVE CHARGE, AND NEUTRONS HAVE NO CHARGE. | FALSE. ELECTRONS HAVE A NEGATIVE CHARGE |
| T/F. PROTONS AND ELECTONS ARE FOUND IN THE NUCLEUS | FALSE. PROTONS AND NEUTRONS ARE FOUND IN THE NUCLEUS. |
| T/F. ELECTRONS HAVE A POSITIVE CHARGE AND ARE NOT PART OF THE NUCLEUS | FALSE POSITIVE |
| T/F. ELECTRONS ARE VERY LIGHT. | TRUE |
| T/F. NEILS BOHR DEVELOPED A SIMPLIFIED MODEL OF THE ATOM TO HELP PEOPLE UNDERSTAND THE ATOM. | TRUE |
| T/F. AN ATOM IS THE SMALLEST PIECE OF AN ELEMENT. | FALSE AN ELECTRON IS THE SMALLEST PIECE OF AN ATOM |
| T/F. THE BIBLE TELLS US THAT THROUGH FAITH WE MUST ACCEPT SOME THINGS THAT GOD HAS MADE BUT THAT ARE NOT COMPLETELY VISIBLE TO MAN | TRUE |
| WHAT ARE THE THREE BASIC PARTS OF THE ATOM? | PROTONS, NEUTRONS, AND ELECTRONS |
| IF THE ELEMENT CARBON HAS 6 PROTONS, HOW MANY ELECTRONS DOES IT HAVE? HOW DO YOU KNOW? | 6 ELECTRONS, BECAUSE IN A NORMAL ATOM THERE IS THE SAME NUMBER OF ELECTRONS AND NEUTRONS. |
| WHY DO SCHENTIST USE SYMBOLS T WRITE ELEMENTS AND COMPOUNDS? | BECAUSE THE SYMBOLS ARE QUICKER AND EASIER TO WRITE THAN THE FULL NAME. |
| HORIZONTAL ROWS OF THE PERIODIC TABLE | PERIODS |
| VERTICAL COLUMNS OF THE PERIODIC TABLE | GROUPS |
| ELEMENTS THAT POSSESS SIMILAR CHARACTERISTICS AND REACT SIMILARLY WITH OTHER ELEMENTS, THEY ARE SOMETIMES COLOR CODED ON THE PERIODIC TABLE | CATEGORIES |
| A COMPLEX COMPOUND BREAKS INTO TWO OR MORE SIMPLER COMPOUNDS | DECOMPOSITION |
| A NEW SUBSTANCE FORMS WHEN MOLECULES COMBINE | SYNTHESIS |
| WHAT DOES THE CHEMICAL FORMULA H2O TELL A SCIENTIST? | 2 HYDROGEN ATOMS + 1 OXYGEN ATOM |
| COMMON NAME FOR H2O | WATER |
| HOW IS THE COMPOUND H20 DIFFERENT FROM THE ELEMENTS HYDROGEN AND OXYGEN? | THE TWO ARE DIFFERENT BECAUSE THE COMPOUND IS FROM TWO OR MORE DIFFERENT ELEMENTS. THE ELEMENTS ARE MADE UP OF ONLY ONE KIND OF ATOM. |
| WHAT IS THE DIFFERENCE BETWEEN CONVALENT BONDING AND IONIC BONDING? | THE DIFFERENCE IS WITH CONVALENT BONDING ATOMS SHARE ELECTRONS. WITH IONIC BONDING NEGATIVELY AND POSITIVELY CHARGED IONS ATTRACT TO EACH OTHER. |
| T/F IN A CLOSED SHELL ATOM THE OUTERMOST SHELL IS COMPLETELY FILLED UP. | TRUE |
| T/F A NEGATIVE ION HAS GAINED ELECTRONS TO FILL ITS OUTER SHELL. | TRUE |
| T/F THE SUBSCRIPT 2 IN H2O TELLS US THAT THE MOLECULE HAS TWO ELECTRONS OF OXYGEN. | FALSE OXYGEN |
| T/F A NEGATIVE ION HAS GIVEN AWAY ELECTRONS FROM ITS OUTER SHELL. | FALSE POSITIVE |
| T/F IONIC BONDING OCCOURS WHEN ATOMS SHARE ELECTRONS. | FALSE CONVALENT BONDING |
| T/F IONIC COMPOUNDS SUCH AS SALT FORM CRYSTALS. | TRUE |
| EXPLAIN WHY ALL COMPOUNDS ARE MOLECULES BUT NOT ALL MOLECULES ARE COMPOUNDS. | THE REASON IS A COMPOUND IS A SUBSTANCE MADE UP OF TWO OR MORE ELEMENTS. a MOLECULE IS MADE UP OF TWO OR MORE ATOMS. |
| WHAT DOES THE CHEMICAL FORMULA H2CO3 TELL YOU ABOUT CARBONIC ACID? | IT TELLS US THAT ITS MADE UP OF 2 HYDROGEN, 1 CARBON, AND 3 OXYGEN. |
Created by:
lucybelle
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