Vocab 1.1/1.2
The study of the properties of matter and how matter changes
Chemistry
A particle made of two or more atoms bonded together
Molecule
Matter is not created nor destroyed in any chemical or physical change
Law of Conservation of Mass
the amount of matter in an object
Mass
Hg
Mercury
A characteristic of a pure substance that can be observed without changing it into another substance
Physical Property
A pure substance made of two or more elements chemically combined
Compound
the energy an object has due to its motion
Kinetic Energy
The amount of space an object takes up
Volume
Cd
Cadmium
A substance that cannot be broken down into simpler substances by chemical or physical means.
Element
A mixture in which pure are substances are unevenly distributed throughout the mixture.
Heterogenous Mixture
A form of energy that travels through space as waves
Electromagnetic Energy
What is the equation for Density
Mass/Volume
Sn
Tin
A characteristic of a pure substance that describes its ability to change into different substances
Chemical Property
A formula that gives the elements in a compound and the ratio of atoms.
Chemical Formula
During a chemical change, chemical energy may be changed to other forms of energy. Other forms of energy may also be changed to chemical energy.
Transforming energy
Would something with a density of 1.26 g/mL float or sinkin water? Explain.
Sink as it is more dense than water.
Bi
Bismuth
A combination of two or more substances (that are mixed together) but not chemically combined
Mixture
Distinguish between mass and weight
mass does not include the force of gravity, but weight does. Ex. Weight would be different on the moon, but mass would not
Distinguish between endothermic and exothermic reactions.
Endothermic reactions require energy and exothermic reactions give off energy.
What is the density of an object with a mass of 6.9 grams and a volume of 2.3 mL? Don't forget your units!!!!!!!
3 g/mL
V
Vanadium