Phase Changes
What is Solid to Liquid?
Melting
What is the point where something melts?
Melting Point
Is rotting a Chemical or Physical change?
Chemical
What is an Element?
A Pure Substance containing only one kind of atom.
What type of Matter is Sugar and Water?
Mixture
What is Liquid to Solid?
Freezing
What is the tendency of a liquid to resist flowing?
Viscosity
True or False
A change in odor is evidence that a chemical change has occurred.
True
What is a Mixture?
Two or more elements or compounds not chemically combined.
What type of matter is Baking Soda (NaHCO3)?
Pure Substance
What is Gas to Liquid?
Condensation
What is it called to determine which is harder based on which scratches the other?
Hardness
Is fogging a mirror with your breath Chemical or Physical?
Physical
What is a Compound?
A pure substance containing two or more kinds of atoms.
Element
What is Solid to Gas?
Sublimation
What is Flammablity?
The ability to burn or ignite
You are cleaning your bathroom and you accidentally mix bleach and ammonia, which produces a toxic gas, that makes you pass out. What type of change is this?
Chemical
Over 100 existing elements are listed and classified on the ____.
Periodic Table
Is Chocolate Milk a Suspension, Colloid, or Solution?
Colloid
What is Gas to Solid?
Deposition
What is Malleability?
The ability to be shaped and not break
Scientists break up water by separating O2 and H2. What type of change is this and how do you know?
Chemical change because Rearranging Atoms
How can a Compound be separated? Why?
Concrete, Syrup, Chocolate Milk, Vinegar, Clouds, Salt, Whipped Cream, and Soft Drinks.
Out of the list, which are Solutions?
Syrup, Vinegar, Soft Drink