Question | Answer |
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 |