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1st semester science

Science vocab

QuestionAnswer
a relation stating that in a chemical reaction, the mass of the products equals the mass of the reactants. Law of conservation of mass
properties of an element or compound that can be observed without a chemical reaction of the substance. Physical change
A chemical change produces a new substance. Chemical change
one of a class of substances that cannot be separated into simpler substances by chemical means. Element
molecules composed only of two atoms, of either the same or different chemical elements. Diatomic Molecule
Used to measure the amount of water there is. graduated cylinder
Measure the mass of objects. triple beam balance
a substance that participates in a chemical equation, esp a substance that is present at the start of the reaction Compare product Reactants
A product is a substance that is formed as the result of a chemical equation products
A coefficient is a number placed in front of a term in a chemical equation to indicate how many molecules (or atoms) take part in the reaction. coefficient
The number that represents how many of that atom that's behind it. Subscript
take temperature of solids, liquids, and gases. Thermometer
Used to hold and heat liquids. Beaker
used to hold liquids. test tube
An object at rest stays at rest. an object in motion stays in motion, unless acted on my an outside force. Newton's 1st law
in this law the direction of the force is the same as the direction of the acceleration . Newton's 2nd law
in this law the direction of the force vector is the same as the direction of the acceleration vector. Newton's 3rd law
How fast an object is traveling. Speed
How far an object has traveled. Distance
the rate at which the velocity of a body changes with time Acceleration
Created by: m1107422
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