Set: Physical Science Semester 2 Final
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All 55 Terms
| | Term | Definition |
|---|---|---|
| |
have an equal amount of electrons and protons | Atoms have no electrical charge because they... |
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chemical properties | Valence electrons determine an atom's |
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electron | A subatomic particle that has a negative charge is called an... |
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protons and neutrons | A atom's nucleus is made of... |
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neutral | The charge of an atom is... |
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protons | An element's atomic number is equal to its number of... |
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electrons | The number of energy levels filled in an atom is determined by... |
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protons plus neutrons | An atom's mass number equals the number of |
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atomic number | You can find the number of protons in an atom by looking at the... |
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protons in the nucleus | The order of elements is based on... |
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valence electons | Atoms of elements that are in the same group have the same... |
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ions | Atoms that have a charge are called... |
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chemical properties | Elements in a family have similar... |
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energy levels | Elements that are found in the same period have the same number of... |
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have a complete outer energy level | Often atoms will join so that each atom will |
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ions with opposite charges | An ionic bond is a bond that forms between... |
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chemical bonds | Atoms and ions are held together by |
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inhibitors | Catalysts that slow reactions down are called... |
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a new, more complex compound is formed | A synthesis reaction is a reaction between at least two compounds in which.. |
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collide with other molecules | Large molecules react more slowly that small ones because they have less opportunity to... |
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velocity | The ___of an object consists of speed and direction |
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direction | Displacement must always indicate… |
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direction | The difference between speed and velocity is that velocity includes |
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product | The substance that is formed in a chemical reaction is called the… |
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negative | When an object slows down, its acceleration is… |
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power | ____is defined as the rate at which work is being done |
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potential, kinetic | As a dropped penny falls towards the ground,____energy is converted to____energy |
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cannot be created or destroyed | The law of conservation of energy states that energy… |
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newtons 1st law | The law that states that every object maintains constant velocity unless acted on by an unbalanced force |
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newtons 3rd law | The law that states that for every action force there is an equal and opposite reaction force is… |
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newtons 2nd law | The law that states that the unbalanced force acting on an object equals the object's mass times its acceleration is… |
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newtons 3rd law | Earth pulls on the earth and holds the moon in its orbit. The moon pulls on Earth with and equal and opposite force. This is an example of… |
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friction | What force causes a skater sliding on the ice to gradually slow down? |
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distance between objects | The gravitational force between two objects depends on the masses of objects and… |
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gravity | When an object is in freefall, the only force acting on it is… |
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is the same for all objects | Free-fall acceleration near Earth's surface… |
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forward motion and free fall | Orbital motion is a combination of… |
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mass and velocity | An object's momentum is determined by the object's… |
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is transferred to the pin | When a moving bowling ball hits a pin, some of the ball's momentum… |
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newton | The SI unit of force, named after the scientist who described the relationship between motion and force, is called the… |
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protons, electrons | Most atoms have equal numbers of___and____. |
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positive | The nucleus of an atom has a ___electrical charge. |
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mole | The___is the SI unit that is used for counting small particles, such as atoms. |
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nucleus | Neutrons and Protons are found in the___of an atom. |
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protons | The order of elements in the periodic table is based on the number of____in the nucleus. |
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ion | The valence electron of a lithium atom is easily removed to form a lithium___with a charge of 1+. |
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chemical | A change in color is a sign that a___reaction is taking place. |
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increase, increase | If you___the temperature of a reaction, generally you will___the rate of the reaction. |
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increase, increase | If you___the surface area of a reactant, you will probally___the rate of the reaction. |
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motion | When an object changes its position relative to a reference point, the object is in___. |
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position | Displacement is the change in____of an object. |
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direction | Velocity describes both speed and_____. |
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compound machine | A _____is a machine made up of more than one simple machine. |
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potential energy | The stored energy resulting from the position of an object is called_____. |
| |
mechanical | Kinetic and Potential energy are types of_____energy. |
Set Information
| Terms | 55 |
| Creator | hneagle1 |
| Created | May 16, 2008 |
| Groups | None |
| Tags | None |
| Access | Anyone |
| Edit | Creator Only |
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Last Message: 4 months ago
Most Missed Words
- valence electons → Atoms of elements that are in the same group have the same... - 2 misses
- have a complete outer energy level → Often atoms will join so that each atom will - 2 misses
- a new, more complex compound is formed → A synthesis reaction is a reaction between at least two compounds in which.. - 2 misses
- collide with other molecules → Large molecules react more slowly that small ones because they have less opportunity to... - 2 misses
- distance between objects → The gravitational force between two objects depends on the masses of objects and… - 2 misses
- forward motion and free fall → Orbital motion is a combination of… - 2 misses
- is transferred to the pin → When a moving bowling ball hits a pin, some of the ball's momentum… - 2 misses