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21 Cards in this Set
- Front
- Back
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the study of what substances are made of, and how one substance can be changed into another. |
Chemistry |
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anything that take up space and has mass |
Matter
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a measure of the pull of gravity on an object |
weight |
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the amount of matter that makes up an object |
mass |
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a metric unit used to measure an object's mass |
gram |
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the amount of matter in one unit of volume |
density |
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tiny particles that matter is composed of |
atoms |
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the tiny, extremely dense core at the center of an atom |
nucleus |
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the tiny particles that swarm at tremendous speed around the nucleus of an atom |
electrons |
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the two types of particles which make up the nucleus of an atom |
neutrons and protons |
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anything lacking in an electrical charge |
neutral |
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What are the first moving electrons commonly described as? |
electron cloud |
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the simplest kind of atom, with only a single electron whirling around a single proton |
hydrogen |
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name for the number of protons in an atom |
atomic number |
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Electrons in orbit at roughly the same distance from the nucleus are said to be in the same what? |
shell |
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Which type of atom has 2 electrons around a nucleus of 2 protons and 2 neutrons? |
helium atom |
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Which type of atom has 6 electrons around a nucleus of 6 protons and 6 neutrons? |
carbon atom |
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Which type of atom has 8 electrons around a nucleus of 8 protons and 8 neutrons? |
oxygen atom |
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Which type of atom has 11 electrons around a nucleus of 11 protons and 12 neutrons? |
sodium atom |
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a particle that helps make up the nucleus of an atom
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neutron
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a positively charged particle that helps make up the nucleus of an atom
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proton
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