8th grade quarter 1 study guide (Smith)
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| show | a substance consisting of a single type of atom
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| Compound | show 🗑
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| Molecule | show 🗑
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| Proton | show 🗑
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| show | -no electrical charge; located in the nucleus
-included in the atom's mass (1 neutron = 1 amu)
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| show | -negatively charged subatomic particle; located in the electron cloud on orbitals/rings/shells outside the nucleus
-not included in the atom's mass (1 e = 1/2,000 amu)
-In a neutral atom, there is an = amount of electrons + protons
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| show | the arrangement and form of an atom is made up of protons, neutrons, and electrons (subatomic particles); the nucleus at the center contains protons + neutrons; an electron cloud surrounds nucleus & contains electrons (rings are known as orbitals/shells)
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| Atoms | show 🗑
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| States of Matter | show 🗑
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| show | has a definite shape and a definite volume; particles are tightly packed, and vibrate in a fixed position
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| Liquid | show 🗑
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| show | has no definite shape and no definite volume; takes shape of its containers; particles are far apart and moving fast & freely
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| show | variant forms of a particular chemical element that contain the same number of protons, but a different number of neutrons in an atom than all other forms of that element (same atomic #, different atomic mass)
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| show | SOLIDS: -tightly packed, barely moving, taking up entire box
LIQUIDS: -still touching/bonded, enough space to slip past each other, more atomic motion, taking up entire box
GASES: -spread far apart, moving fast & freely
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| Be able to label a phase change graph showing the states of matter and the terminology used to describe each phase change | show 🗑
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| Protons = 34 Electrons = Neutrons = Atomic # = Atomic Mass = 72 | show 🗑
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| show | Protons = 7
Electrons = 6
Neutrons = 4
Atomic # = 7
Atomic Mass = 11
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| show | 118
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| show | The structure of an atom contains a nucleus in the center consisting of protons and neutrons, and the electrons vibrate/move around on orbitals/rings/shells in the electron cloud around the nucleus
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| Explain what a compound is and how to identify one by looking at a chemical formula. | show 🗑
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| show | 2BaF2 = Ba-F-F Ba-F-F
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| When given a problem, be able to explain each step of the engineering design process you would complete in order to solve that problem. Constraints vs Criteria? How do you choose the best design? How do you choose the way you will communicate your design? | show 🗑
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| show | 3 & 4. design and develop the solutions- come up with 2-3 brainstorming ideas and draw out the initial ideas. Narrow it down to one main idea and draw a more complex diagram of your prototype
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| Continued...5/6 When given a problem, be able to explain each step of the engineering design process you would complete in order to solve that problem. How do you choose the best design? How do you choose the way you will communicate your design? | show 🗑
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| Continued...8 When given a problem, be able to explain each step of the engineering design process you would complete in order to solve that problem. How do you choose the best design? How do you choose the way you will communicate your design? | show 🗑
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| show | --certain isotopes aren't stable and emit radiation; can be dangerous, but safety measures can be taken to benefit society
Ex: Americium-241 is used in smoke detectors, and Cobalt-20 is used with food irradiation and sterilizing medical equipment
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| show | Hydrogen-1 (1 proton); hydrogen-2 (1 p-1 n); hydrogen-3 (1 p-2 n)
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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