Q.1.
The word oxidation describes
Q.2.
The word reduction describes
Q.3.
What type of reaction is illustrated below?2HI --> H+ I2
Q.4.
Which of the following options correctly balances the equation below?__HNO2 + __O2 --> __HNO3
Q.5.
Which of the following is NOT a sign of a chemical reaction?
Q.6.
True or FalseIn a chemical reaction, no new atoms are created, and no atoms are destroyed.
Q.7.
A metal is reacted with an acid to produce a salt and a hydrogen gas. What type of reaction has occurred?
Q.8.
What are the correct coefficients when this equation is balanced?KClO--> KCl + O2
Q.9.
Which half reaction shows the element being reduced. In the following reaction. 2Na + Cl--> 2NaCl
Q.10.
Potassium iodide is a catalyst in a chemical reaction where would this be placed when writing the chemical reaction?
Q.11.
A compound is reacted and forms two new substances. What type of reaction is this?
Q.12.
An element plus additional element reacts to form one product is an example of which type of chemical reaction?
Q.13.
Predict the following reaction NaCl + Ca(NO3)2 -->
Q.14.
Provides evidence that a chemical reaction has occurred.
Q.15.
Describes the number of molecules in a compound and is used to balance a chemical reaction.
Q.16.
Which of the following compounds will not disassociate in water?
Q.17.
Magnesium reacts with hydrochloric acid to produce magnesium chloride and hydrogen gas this happens because?
Q.18.
Describes the number of atoms in a compound of each element.
Q.19.
Balance this equation._CF4 + _Br2 -- _CBr4 + _F2
Q.20.
How many HCl molecules do you need to balance this equation? Mg + __HCl ---> MgCl2 + H2