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| Anything that has mass and takes up space. |
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| A group of atoms that are held together by chemical forces |
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| You can see separated parts in the. |
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| A pulsar is a highly magnetized, rotating neutron star that emits a beam of electromagnetic radiation. |
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| A homogeneous mixture throughout which two or more substance are uniformly. |
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| Has a rigid structure, Has a true shape,Not able to move as easily. |
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| The number of protons in the nucleus of an atom. |
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| A subatomic particle that has a negative charge. |
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| Any process determined by the atomic and molecular composition and structure of the substances involved. |
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| The distance traveled divided by the time interval during which the motion occurred. |
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| The overall force acting on an object. |
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| A force that opposes motion between two surfaces that are in contact. |
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| A forcible overthrow of a government or social order for a new system. |
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| Having the sun as the center. |
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| The process of becoming a vapor. |
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| The temperature at which a given solid will melt. |
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| A solid material that is typically hard. |
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| What is the conservation of mass. Why is it important? |
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Definition
Mass (Matter) can neither be Created nor Destroyed. |
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| What is always true about density of a substance? |
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Definition
| The density of a pure substance will stay constant. |
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| Explain the difference between a pure substance and a mixture. |
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| The difference between a pure substance and a mixture is that a pure substance is made up of only one type of particle. Where a mixture is made up of more than one type of particle. |
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| Know the history up through the modern atomic theory and then tell me the location of the electron, proton and neutron. |
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Definition
| The electrons are surrounding the nucleus. Protons neutrons are located in nucleus of the atom. |
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| Know how to find the number of protons,neutrons and electrons off the periodic table. |
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Definition
protons = atomic number
electrons = atomic number
neutrons = rounded atomic mass - atomic number |
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| Why do atoms have no electric charge? Why do ions have a charge? |
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Definition
| The negative particles (electrons) are balanced by the positive particles (protons). |
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| Why is a mixture different from a compound? |
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Definition
| An ion is positively or negatively charged due to the amount of electrons it has compared to the amount of protons it has. |
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| What are the two types of bonding? Explain the process of each type. Give examples. |
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Definition
| Ionic bonds and covalent bonds. An ionic bond is formed when one atom accepts. Acovalent bond is formed when atoms share valence electrons. |
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| How many galaxies exist in the universe? |
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| 170 billion galaxies in the Universe. |
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| How are galaxies classified? |
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| Piral, barred spiral, elliptical and irregular. |
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| Know the main difference between a heliocentric and a geocentric belief. |
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| The heliocentric model is a theory that places the Sun as the center of the universe, and the planets orbiting around it. The heliocentric model replaced geocentrism, which is the belief that the Earth is the center of the universe. |
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| Approximately how old is the universe? |
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Definition
| In a universe that is estimated at 13.7 billion years old. |
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| What are newtons 3 laws of motion? Give an example of three. |
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Definition
| 1.An object at rest will remain at rest unless acted on by an unbalanced force. An object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force. 2.Acceleration is produced when a force acts on a mass. The greater the mass the greater the amount of force needed (to accelerate the object).For every action there is an equal and opposite reaction.. |
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| Can you have a negative slope on a graph? Tell me how. |
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| The points are going on a downward slant. |
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