Phase Changes
What is deposition?
A Phase change from Gas to Solid.
What is Toxicity?
Toxicity is a chemical Property.
What is a Reactant?
The Starting Material.
How are the Particles in a gas Arranged?
It has no Definite shape and is very fast.
What is matter?
Matter is anything that takes up mass and Volume.
What is the Law of conservation of Energy?
Energy can not be created or destroyed.
Physical properties.
What is an Endothermic Reaction?
A reaction that absorbs heat.
What is a compound
A substance made up of 2 or more different elements
What is a pure Substance?
Matter that always has the same Composition.
What are all of the Phase changes?
Melting, evaporating, condensation, freezing, deposition, and Sublimation.
What is Viscosity and an example?
Viscosity is the tendency of a liquid to resist flowing, and an example is honey.
What are some signs that a chemical change has occurred
color change, odor change, the release of heat, gas is created, formation of precipitate.
An example of a compound
NaCl, H2O
What is the difference between a heterogeneous and homogenous mixture
A heterogeneous is not mixed well, A homogeneous is mixed well
What are the ways to separate mixtures + explanation of them
Distilation (separates materials based on boiling boiling) Filtration (separates materials based on sized)
What is the mass of the ethyl alcohol that exactly fills a 200.0 mL container? The density of ethyl alcohol is 3 g/mL.
600g
In an exothermic reaction, reactants have ___ energy than products so energy is ___
greater/more, Released
Is the brass of the trumpet considered a Homogeneous or Heterogeneous mixture
Homogeneous mixture
What is the kinetic theory
All matter is made of atoms and molecules that act like tiny particles
Energy must be___ or ___ to have a phase change
Added or Removed
What volume of silver metal will weigh exactly 3800, and the density is 5
760 ml
Is photosynthesis an exothermic or endothermic reaction
endothermic
Is an ion an element or a compound
compound
Part of the kinetic theory: Tiny particles are ___. The ____ the temperature the faster the particles move
Always in motion, Higher