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Chemistry

QuestionAnswer
What is chemistry? The study of matter
What is matter? Anything that has mass and takes up space (volume)
What is a atom? Unique particles that make up other forms of matter
What is a molecule À particle made up of 2 or more atoms ( could be same or diffrent )
What is a particle Small unit of matter that can be made up of atoms, molecules, compounds, ions etc… this is the safest option for naming something
What is a pure substance Where all of the particles are identical
What is a mixture Diffrent types of particles present ( homogeneous and heterogeneous )
What is a element Made from only one type of atom
What is a compound Made from 2 or more types of atoms
Homogeneous Same composition throughout
Heterogeneous Different composition throughout
How to measure volume Measured in liters (L)
How to measure length Meters (m)
How to measure mass Grams (g)
How to measure temperature C° or K
How to measure time Seconds (sec)
How to measure the amount of matter Mole (mol)
What is accuracy How close your measurements are to the known
What is precision How close your measurements of the same object are to eachother (how repeatable your data is)
What are physical properties Something you can notice or measure without changing thr object
What is physical change When something changes how it looks, feels, or acts, but does nkt turn into a new substance
What are chemical properties A characteristic of something, but you can only see when it changes into something else
What is chemical change One or more substance turn into a completely new substance with different properties
What is density The measure of how much mass/matter is in a given amount of space/volume
What is the formula for density D=m/v
What are Ions Atoms with a positive or negative charge
What are Isotopes Atoms of the same element with different mass numbers
Created by: Vivianasaccuzzo
 

 



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