Reactions Unit 8

Question 1

Chemical Reaction

Answer 1

a process in which one or more substances is converted into a new substance with different chemical and physical properties

Question 2

reactants

Answer 2

left side, entered in a reaction

Question 3

Reactants—> _____

Answer 3

products. Right side, what is made

Question 4

Aq

Answer 4

Aqueous (dissolved in water)

Question 5

NR

Answer 5

no reaction has occupied

Question 6

coefficients

Answer 6

numbers written in front of a chemical or element that helps in balancing and tell how many of each element are present in a reaction

Question 7

Diatomic elements… 7 examples and hintclue

Answer 7

elements that will pair up if not bonded with anything else
ex: H2,O2,Br2,F2,I2,N2,Cl2
“HOBrFINCl”

Question 8

5 signs of a chemical reaction

Answer 8

Odor, color change, precipitate, bubbles, temperature change

Question 9

balancing chemical equations rule

Answer 9

in a chemical reaction the number of atoms must remain the same before and after. As they rearrange you must use coefficients to make each side balance