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Science Vocabulary

1st Semester Review Vocab

QuestionAnswer
Triple Beam Balance An instrument used to measure mass.
Graduated Cylinder An instrument used to measure volume.
Density The mass of an object divided by its volume.
What should you do if you spill or break something in the lab? Notify the teacher.
What should you do when you enter the classroom? Sit down and await instructions.
What should you wear when heating substances? Goggles
Atom The smallest unit of an element.
Nucleus The center of an atom.
Proton Positively charged particle in the nucleus.
Neutron Neutrally charged particle in the nucleus.
Electron Negatively charged particle outside nucleus.
Element A substance that cannot be broken into simpler substances.
Metal An element that is luster, malleable, ductile, and a good conductor of heat and electricity.
Nonmetal An element that is brittle and a poor conductor of heat and electricity.
Metalloid An element that have properties of both metals and nonmetals.
Chemical Equation Tells what's happening.
Chemical Formula Shortened equation.
Coefficient Tells how many molecules of that molecule.
Subscript Tells how many of that atom.
Physical Change The appearance changes, but not the substance.
Chemical Change The substance changes and it becomes a new material.
Force A push or pull.
Balanced Force There will be no change in motion.
Unbalanced Force There will be a change in motion.
Newtons 1st Law An object at rest stays at rest unless acted upon by an unbalanced force.
Newtons 2nd Law Mass times force equals acceleration.
Newtons 3rd Law For every action there is an equal and opposite reaction.
Speed Distance divided by time.
Distance Speed times time.
Time Distance divided by time
What variables does a speed graph have? Distance and time.
What variables does an acceleration graph have? Speed and time.
What is the universe? Everything.
What is an asteroid? A piece of rock in space, usually between Mars and Jupiter.
What planets are in our solar system? Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
Light Year The distance light travels in one year.
What is the Electromagnetic Spectrum? The range of all possible frequencies of electromagnetic radiation.
Created by: sondre1
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