Here's Your Sign!
Balancing Act
What's Your Type?
In or Out?
Past Test Review
100
Leaving milk out for several days will produce this sign of a chemical change.
What is Odor?
100
__ C + __ S8 -> __CS2
What is 4; 1; 4?
100
A chemical reaction in which two substances combine to produce a single, new product.
What is Synthesis reaction?
100
Chemical reaction in which the products have less energy than the reactants.
What is Exothermic reaction?
100
This is the maximum number of orbitals that can be located at the third innermost electron shell.
What is 9 orbitals?
200
Hand warmers are activated when different substance inside them are squished and mixed together, providing this type of evidence for a chemical reaction.
What is change in energy (temperature)?
200
__ Na + __ O2 -> __ Na2O
What is 4; 1; 2?
200
The type of chemical reaction demonstrated by the following chemical equation:
2 Mg + 2 HCl -> 2 MgCl + 1 H2
What is Single-Displacement reaction?
200
Chemical reaction in which the surrounding environment gains energy from the system that is reacting.
What is Exothermic reaction?
200
This is the type of chemical bond that will form between two nonmetals with electronegativity difference of 0.8.
What is polar covalent bond?
300
This visible sign of a chemical reaction is often evidence when mixing metals with acids.
What is Fizzing/Bubbling/Vapor?
300
__ Li + __ H2O -> __ LiOH + __ H2
What is 2; 2; 2; 1?
300
A chemical reaction in which two ionic compounds swap anions or cations with one another.
What is Double Displacement / Replacement reaction?
300
An ice pack is an example of this type of chemical reaction.
What is Endothermic reaction?
300
The period table family of elements loves to form anions by reacting with the Alkali metals and the Alkaline Earth metals?
What is Halogens?
400
Three different substances are mixed together and chemically react. Two liquids and a gas, which results in two liquids and a solid, providing evidence for this sign of a chemical reaction.
What is precipitate?
400
__ C6H6 + __ O2 -> __ CO2 + __ H2O
What is 2; 15; 12; 6?
400
This type of reaction takes place at many powerplants daily in order to generate electricity from fossil fuels.
What is Combustion reaction?
400
A puddle of water evaporating is this kind of process.
Endothermic process?
400
These two isotopes are the key players in carbon dating. Scientists compare the ratios of these two isotopes present in organic material and then use half life data to determine the material's age.
What is Carbon-12 & Carbon-14?
500
When a glow stick is bent it snaps, breaking a capsule that mixes chemicals together creating a glow, providing this sign of a chemical reaction.
What is change in energy (light, luminosity)?
500
__ Al(OH)3 + __ H2SO4 -> __ Al2(SO4)3 + __ H2O
What is 2; 3; 1; 6?
500
Electrolysis is a process that breaks apart covalent bonds of water molecules and converting them into molecules of hydrogen and oxygen gas. Electrolysis refers to this type of reaction.
What is Decomposition reaction?
500
Nuclear fission is an ________thermic reaction. Nuclear fusion is an ________thermic reaction
What is exothermic; exothermic?
500
This is the name of the compound Ca3(PO4)2.
What is Calcium Phosphate?