It depends if you are taking the class in high school or college. For college doing the experiments is fun but the calculations is not. Also if you are taking it, bring friends.
Answer:
II. Rearrange the following jumbled words/phrases to make meaningful sentences: 5x1=5
a. certainly/the laughter/is/medicine/best
b. laughter/fact/is/in/a/panacea/for/diseases/all
c. lowers/pressure/by/circulation/it/blood/increasing/blood
d. a sense/and promotes/of/stress/well-being/laughter/decreases.
e. healthy food/ needed/is/better/also/lead/to/a/life
45 m/s * 3.6 = 162 km/h. Multiply with 3.6 to go to km:h, divide by 3.6 to go to m/s
Answer:
Ionic bonds are formed through the exchange of valence electrons between atoms, typically a metal and a nonmetal. The loss or gain of valence electrons allows ions to obey the octet rule and become more stable. Therefore, ions combine in ways that neutralize their charges.
Explanation:
c is the answer i odnt know the rest im only a sophmore