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Physical Science
2013 End Final
| Question | Answer |
|---|---|
| An orderly, systematic approach to problem solving | Scientific method |
| A proposed solution to a scientific problem is called a | Hypothesis |
| In an experiment, one factor being tested is the | Variable |
| The basic unit of length in the metric system | Meter |
| A cubic centimeter is equal in volume to a | Millimeter |
| The basic unit of mass in the metric system is | Gram |
| The amount of matter in an object is called its | Mass |
| To measure the mass of a solid, you should use a | Balance |
| An air piston is graduated in | Cubic centimeters |
| What are the general properties of matter? | Weight, volume, mass, density |
| The density of an object is equal to | Mass/volume |
| Matter that has a definite shape and definite volume is a | Solid |
| The phase of matter in which the particles move the fastest and farthest is | Gas |
| The phase change from a gas to a liquid is called | Condensation |
| According to makeup, matter exists as | Elements, compounds, molecules, solutions |
| Putting an acid on something tests its | Chemical properties |
| If something happens after putting an acid on something, that is a | Chemical change/reaction |
| The different phases of matter ____ energy as they go up | Gain |
| The different phases of matter ____ energy as they go down | Lose |
| Qualitative is an observation using | The five senses |
| Quantitative is an observation using | Amounts/numbers |
| Protons have a/an __________ charge | Positive |
| Electrons have a/an __________ charge | Negative |
| Neutrons have a/an __________ charge | Neutral |
| Protons are located in the __________ | Nucleus |
| Electrons are located in the __________ | Outside of the nucleus |
| Neutrons are located in the __________ | Nucleus |
| Protons have a mass of | 1 AMU |
| Electrons have a mass of | 0 AMU |
| Neutrons have a mass of | 1 AMU |
| Matter than consists of 2 or more substances mixed but not chemically combined is a | Mixture |
| The basic building block of matter is the | Atom |
| The simplest type of a pure substance is a/an | Element |
| Rutherford's atomic model pictures a positively charged center called a/an | Nucleus |
| Particles smaller than the atom are called | Subatomic particles |
| The nucleus of an atom contains | Protons and neutrons |
| The number of protons in an atom are the same as it's ___________ | Atomic number |
| Electrons in the outermost energy level cannot exceed | 8 |
| The transferring of electrons is what type of bond? | Ionic |
| The sharing of electrons is what type of bond? | Covalent |
| A bond involving a compound with three or more elements is a | Polyatomic bond |
| Metals bonding with a metal is a | Metallic bond |
| Ionic bonds involve the transferring between | A metal and non-metal |
| Covalent bonds involve the sharing between | Nonmetals and nonmetals |
| Solid directly to a gas is | Sublimation |
| Putting ionic or polyatomic bonds in water will cause the water to | Conduct/create energy |
| Groups __ and __ are the most reactive on the periodic table | 1 and 17 |
| The least reactive group on the table are the | Noble gases, group 18 |
| _____ is solid, _____ are gas | Black; red |
| Majority of the elements on the periodic table are | Metals |
| _____ elements are manmade | White |
| There are __ groups on the periodic table | 18 |
| There are __ columns on the periodic table | 8 |
| There are __ periods on the periodic table | 7 |
| Alkaline metals are in the _ orbital | s |
| Transition metals are in the _ orbital | d |
| Gases are in the _ orbital | p |
| Rare earth metals are in the _ orbital | f |
| Electrons in the outermost energy level are called | Valence electrons |
| The ability to undergo chemical reactions is determined by its | Outermost electrons |
| In a balance chemical equation | Atoms are balanced |
| Two or more simple substances combine to form a single new substance in a | Synthesis |
| A reaction in which energy is absorbed is called | Endothermic |
| A reaction in which energy is released is called | Exothermic |
| True or false: the valence electrons determine the net charge | False |
| Valence electrons determind how an atom/element | Bonds |
| True or false: valence electrons identify an element | False |
| __________force holds together a compound | Electrostatic |
| Hydrogen online forms __________ bonds | Covalent |
| Roman numerals are only used when | The first compound is metal |
| Ductile is when | A metal can be made into a thin wire |
| Malleable is when | A metal can be pounded into a thin sheet |
| Atoms are __________ in a reaction | Rearranged |
| Before a new bond can occur the only bonds must be | Broken |
| On a graph, the products of an exothermic reaction are | Lower |
| On a graph, the products of an endothermic reaction are | Higher |
| You can tell a chemical change has taken place when | Gas, unpredictable color change, temperature change, or precipitation occur |
| The rate of reaction is influenced by | Heat, surface area, pressure, or catalyst/inhibitor |
| The coefficient also tells you the number of | Moles |
| In balancing, the _____ must be equal | Atoms |
| H2 + Blue = | Blue flame, ignited gas |
| H2 + Red = | Red |
| Air + Blue = | Blue flame that stays burning |
| Air + Red = | Red |
| CO2 | Puts out a flame |
| CO2 + Red | Yellow |
| CO2 + Blue | Yellow |
| All acids start with the letter | H |
| All bases end in | OH |
| If an element does start with H or end in OH, it is | Neutral |
| A ph less than 7 is | Acidic |
| A ph at 7 is | Nuetral |
| A ph greater than 7 is | Basic |
| Shell + HCl creates | CO2 |
| Anti-acids are | Bases |
| You should always balance an equation before you calculate the | Moles |
| When balancing an equation, if all have a coefficient check to see if you can | Simplify it |