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
Answer:
Change in volume on changing temperature from 33
to 5
is 5.49 mL
Explanation:
Initial volume of gas = V = 60 mL
Assuming final volume of gas to be V' mL
Initial temperature = T = 33
= 306 K
Final temperature = T' = 5
= 278 K
The relationship between volume and temperature of gas at constant pressure is shown below

Change in volume on changing temperature = 5.49 mL
Answer:
Magnesium
Explanation:
When an atom loses are gain the electrons ions are formed.
There are two types of ions.
Anion
Cation
1 = Anion
It is formed when an atom gain the electrons. when atom gain electron negative charge is created on atom. For example.
X + e⁻ → X⁻
2= Cation
It is formed when an atom loses the electrons. when atom lose electron positive charge is created on atom. For example.
X → X⁺ + e⁻
There are seven valance electrons in iodine. To complete the octet it gain one electron and form anion.
Sulfur has six valance electrons it gain two electrons to complete the octet and form anion.
Phosphorus has five valance electrons it gain three electrons two complete the octet and form anion.
Magnesium has two valance electrons it loses two electron to complete the octet and form cation.
Observations, surveys, and models.