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3rd 9 weeks Quiz
Review Study Stack for 3rd 9 weeks Quiz
| Question | Answer |
|---|---|
| How do objects become charged with static electricity? | Electrons are rubbed off the atoms of one substance (which becomes positive) and onto another (which becomes negative). |
| Opposite charges do what? | Attract to each other |
| Like charges do what? | Repel each other |
| All electricity involves the movement of what subatomic particle? | Electrons |
| What is the name for the region on a magnet where the force is the strongest? | Magnetic Pole |
| Like poles of a magnet do what? | Repel each other |
| What three metals are magnetic? Why? | Ni, Co, Fe because their atoms form magnetic domains that can all line up the same way. |
| What is the name for the area around a magnet where it exherts a force on aother magnetic material? | Magetic Field |
| What is the study of matter and how it changes due to energy? | Chemistry |
| What is the study of energy and how it can affect matter | Physics |
| Elements and compounds are both ____ _____ because they are made of only one thing. | Pure Substances |
| _____ are made of more than one substance. | Mixtures |
| The basic building blocks of all matter are called ____ and found in the periodic table. Their atoms are all alike. | Elements |
| Gold, Oxygen, Carbon, and Sodium are examples of _____. | Elements |
| A ___ is a substance made from 2 or more elements combined together | Compound |
| Water (H20), carbon dioxide (CO2), and Sodium Chloride (NaCl) are are examples of ___. | Compounds |
| This is a homogeneous mixture. It is evenly mixed and looks like one thing. | Solution |
| Salt water, sweet tea, and lemonade are all examples of _________. | Solutions |
| This is a heterogeneous mixture with particles large enough to scatter light (tyndall effect). | Colloid |
| Milk, fog, and gelatin are all examples of a ___. | Colloid |
| THis is a heterogeneous mixture with particles so large they fall out of solution. | Suspension |
| Muddy water and italian salad dressing are examples of a ___. | Suspension |
| A ___ property can be observed without changing the identity of a substance. | Physical |
| Color, shape, size, texture, magnetic, state of matter, and conductivity, are all examples of __ properties. | Physical |
| A ___ property describes how a substance reacts or changes into something else. | Chemical |
| Flammable, Explosive, photosensitive, and corrosive are alle xamples of ___ properties. | Chemical |
| A ___ changes is just a change in size, shape, or state of matter. | Physical |
| Dissolving salt, tearing paper, and boiling water are all examples of ___ changes. | Physical |
| A ___ change happens when a new substance is created. | Chemical |
| Chalk made in the baggie lab, rusting of steel wool, burning of paper to make ash, and acid on magnesium to make hydrogen are all examples of ___ changes. | Chemical |
| List some signs of a chemical change | 1. New substance made 2. Heat taken in or given off 3. light given off 4. electricity given off 5. gas made 6. precipitate made 7. definite color change |
| What particles are found in the nucleus of an atom? | Protons and neutrons |
| Where are electrons found in an atom? | In the electron cloud in energy levels around the nucleus |
| Protons have a ___ charge. | positive |
| Electrons have a ___ charge. | negative |
| Neutrons have a ___ charge. | neutral |
| For Silicon explain what the bohr diagram would look like? | 14 p+ and 14 n0 in the nucleus; 2 e- in the first energy level, 8n e- in the second energy level, and 4 e- in the third energy level. |
| For silicon, what would the electron dot look like? | Si with 4 dots around it |
| Is neon a metal, nonmetal, or metalloid? | nonmetal |
| Is neon a natural or synthetic element? | natural |
| Is neon a solid, liquid, gas, or noble gas? | noble gas |
| Give the group and period of neon. | 18,2 |
| Is Technetium a metal, nonmetal, or metalloid? | metal |
| Is Technetium a natural or synthetic element? | synthetic |
| Is Bromine a solid, liquid, gas, or Noble gas? | liquid |
| Is Silicon a metal, nonmetal, or metalloid? | metalloid |
| Give the group and period of Bromine. | 17,4 |
Created by:
tbrandt
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