Physical Science Question?

U

undrea96

New member
1. According to the law of conservation of mass, __________.
A) mass is neither created nor destroyed in a chemical reaction
B) mass is created and destroyed in a chemical reaction
C) mass is only created in a chemical reaction
D) mass is only destroyed in a chemical reaction
2. If you measured the mass of the products and the mass of the reactants in a chemical reaction, __________.
A) the mass of the products is greater than the mass of the reactants
B) the mass of the reactants is greater than the mass of the products
C) the mass of the reactants is equal to the mass of the products
D) the mass of the products will usually equal the mass of the reactants
3. What shows that mass is conserved in a chemical reaction?
A) An atomic equation
B) A chemical equation
C) A covalent equation
D) A geometry equation
4. The law of conservation of mass requires that __________.
A) both sides of a chemical equation are balanced
B) both sides of a chemical equation do not have to be balanced
C) the reactants side of a chemical equation is unbalanced
D) the products side of a chemical equation is unbalanced
5. The total amount of energy before and after a chemical reaction is the same. Thus, energy is __________.
A) created
B) destroyed
C) conserved
D) the same as mass

Thank you:)
 
Back
Top