Chemical Reactions
Chemical Reactions II
Chemical Reactions III
Chemical Reactions IV
Chemical Reactions V
100
One of the following is a chemical change, NOT a physical change: splitting wood, melting ice, burning wood or dissolving salt in water.
Burning wood
100
What is the product of reaction between hydrogen and oxygen?
Water
100
A substance that enters a chemical reaction is called this.
What is a reactant?
100
When a bath bomb enters water, it performs this action.
What is a reaction?
100
This type of change in a substance's appearance is not a chemical change and is usually reversible.
What is a physical change?
200
In a chemical reaction the substances to the right of the arrow are called this/these?
What is/are products?
200
A rock with a mass of 128g and a volume of 32mL has a density of what?
4g/mL
200
This type of change occurs when a substance or multiple substances rearrange and a new substance is created.
What is a chemical change?
200
Daily BONUS:
What are the signs of chemical change?
Color
Gas Formation
Light
Temperature
Precipitate
200
Give an example of a molecule?
H2O, H2, O2, N2
300
True or false: if one of the reactants is leftover than it is called excess substance.
True
300
We have learned a few different non-flammable gases in this class. Name 3 non-flammable gases.
Helium, Argon, Neon, Nitrogen, Carbon Dioxide.
300
An expression in which symbols and formulas are used to represent a chemical reaction.
A chemical equation
300
two or more elements chemical combined.
What is a Compound?
300
State the Law of Conservation of Mass.
What is "matter can not be created or destroyed in a chemical reaction"?
400
The atomic number of an element is its __________.
Number of Protons
400
True or False: all parts of a mixture are combined?
False
400
An increase in temperature will usually cause the rate of pressure to ________________.
What is increase?
400
In a closed system, there should be no change in...?
What is Mass?
400
This Contains 2 or more different atoms chemically combined, also categorized as a molecule
What is a Compound?
500
Give three examples that a chemical change has taken place.
What is temp. change, color change, odor change, formation of a precipitate, formation of a gas?
500
This lighter than air gas filled the Hindenburg. Double points, what does its name mean?
What is Hydrogen? What is Water Maker?
500
The type of energy that a particle has when it is in motion
What is kinetic energy?
500
Famous retired teacher who made one of our first theories on atoms.
Avogadro
500
Describe the observations happening that cause chemical reaction happening in this image:
Heat changes the atoms and molecules, creating new compounds and making the foods physical shape change.