Show:
Classifying Matter
Matter & Energy
Properties of Matter
Chem. & Phys. Changes
Random
100
What are the two categories of pure substance?
Compound and element.
100
Name the three states of matter.
Solid, Liquid, & Gas
100
what is a property?
something that describes matter
100
true or false in a physical change, some of the substance in a material change, but the properties stay the same.
true
100
-Reactant or Product The substances produced by a chemical reaction.
Product
200
What is a mixture? Name the 2 types of mixtures?
Mixture is a combination of 2 or more pure substances. -Heterogenous mixture -Homogenous mixture
200
What is matter made of?
Atoms & molecules that act like tiny particles.
200
what is viscosity?
the tendency of a liquid to resist flowing "thick"
200
what's the definition of physical change
change in which the identity of the substance does not change
200
-Reactant or Product The starting materials in a chemical reaction
Reactant
300
Which one of the three mixtures separates into layers overtime?
Suspension
300
Going from solid to liquid to gas and back
What is a phase change
300
the mass per unit volume of a substance
What is density
300
in what category does cutting grass go? physical chemical
physical
300
Determines which is harder based on which scratches the other.
Hardness
400
What is the difference between miscible and immiscible?
Immiscible - liquids that do NOT mix into each other Miscible - liquids that DO dissolve into each other
400
What is a the Law of Conservation of Mass?
Mass can not be created or destroyed
400
what is the formula of density
density=mass divided by volume
400
what is a chemical change
when a substance changes into one or more new substance.
400
Ability of a solid to be hammered/shaped without scattering
What is Malleability
500
Define filtration and how it works?
Filtration separates materials based on the size of their particles.
500
What is the Law of Conservation of Energy?
energy can not be created or destroyed
500
examples of chemical properties
flammability, toxicity, ph,radioactivity.
500
signs of physical change
shape change color change by someone texture change dissolving phase change
500
Materials ability to allow heat to flow
Conductivity