According to the law of conservation of matter, the number of is not changed by a chemical reaction.

molecules
bonds
atoms
products

According to the law of conservation of matter, the number of atoms is not changed by a chemical reaction.

answer; 4 electrons;

rosa was looking for patterns to predict the products of chemical reactions. she recorded three similar decomposition reactions in the table.she should record 2licl + 3o2.

in the last row of the table. it is the thermal decomposition of chlorate lithium, hence, she should record these products as: lithium chloride ( 2licl ) and oxygen ( 3o2 )   2 > 2 licl + 3o2.