Metric System
Also known as the International system of units or SI, it is the measurement system used in most of the world
Gram (g)
The SI base unit for measuring mass. About the mass of a paperclip
Meter (m)
The SI base unit for measuring length. About the length of a baseball bat
Liter (L)
The SI base unit to measure volume, about 2 disposable water bottles worth
Volume
a measure of how much space an object takes up
Graduated Cylinder
a tall, narrow, container used to measure a liquid’s volume
Meniscus
the curved surface of a liquid in a graduated cylinder
Regular Solid
Something like a cube, with a regular shape whose volume can be found using LxWxH
Irregular Solid
an object that does not have a regular or definite shape
Water Displacement
Using the change in water levels before and after an object is added to find that objects volume
Mass
How much stuff makes up an object, NOT WEIGHT!
Weight
The effect of gravity on an objects mass, NOT MASS!
Triple Beam Balance
Tool used to measure the mass of objects
Below Words for Quiz 11/22
Density
Measurement of how close together the molecules that make up an object are, found using D=m/v
Solid
State of matter where molecules are packed together, have defined shapes and volume
Liquid
State of matter where molecules are further apart and can move freely, have a definite volume but NOT shape
Gas
State of matter where molecules are even further apart and can move freely, do NOT have a definite shape or volume
Physical Property
a characteristic that can be seen or measured without changing the substance itself (Ex. Color)
Chemical Property
a characteristic that can only be seen by changing the substance (Ex. Flammability)
Physical Change
a change in the appearance or state of something, but the material remains the SAME
Matter
Anything that has mass and volume, comes in one of 3 states
Chemical Change
when something transforms into a new MATERIAL with different properties, can’t be reversed
Element
Pure substance made of atoms, found on the periodic table
Atom
The smallest individual particles, made of protons, neutrons, and electrons
Molecule/Compound
multiple atoms come together to form a new substance
Heterogenous Mixture
combination of different materials where they are not evenly mixed
Homogenous Mixture
a mixture that is evenly mixed, with the same
appearance and properties throughout the mixture
Solution
A homogenous mixture where one of the ingredients is a liquid or gas, the other materials are dissolved into the fluid
Pure Substance
A substance made entirely of one element or molecule
Filtration
Separating two or more things based on size, usually solids or solids from liquids
Distillation
Separating things based on boiling point, usually liquids or liquids from solids
Centrifugation
Using a centrifuge to separate things based on density
Exothermic Reaction
Chemical reaction where energy is released, usually as heat
Endothermic Reaction
Chemical reaction where energy is absorbed, usually as heat
Word
Definition