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Chemistry Test
Question | Answer |
---|---|
Atomic-number | Number of protons in the nucleus. |
Halogens | Are in the element group 17. |
Rutherford | Came up with the silver foil experiment. |
2C6H12O6 | There are 6 oxygen atoms present in this chemical formula. |
Ne | Is Neon, the ionic charge is negative (-). |
CO2 | An example of a compound. |
Na | Sodium. |
Family-of-Elements | Is located in a vertical group on the periodic table. |
Mendeleev | Use elements chemical prperties to organize them on the periodic table. |
Solid | Most elements are know in this state of matter. |
Mass-Number | Tells the number of protons and neutrons in the nucleus. |
Nucleus | In an atom the nucleus contains most of the meass and all of the positive charge. |
Ions | Is an atom that has gained or lost electrons. |
Physical-Charge | During a Physical Charge the particles are not charged. |
Hypothesis | In a lab report the scientist makes a prediction before he carries out the experiment. |
Homogeneous | An example is Tea |
Pure-Substance | An example is a glass of water |
Physical-Reaction | Ice melting |
Chemical-Reaction | Gasoline burning in car engines |
Qualitative | Someones oppinion |
Quantitative | Dealing with numbers |
Independent | Doesn't rely on other variables |
Dependent | Is affected by other variables |