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- Q1
If a balloon is squeezed, what happens to the pressure of the gas inside the balloon?
It stays the same.
It decreases.
The pressure depends on the type of gas in the balloon.
It increases.
45sS9MT -IIj -20 - Q2
According to Charles’ Law as the volume occupied of a given sample of gas at constant pressure is decreased, the temperature will
decrease
The change cannot be predicted
increase
become zero
45sS9MT -IIj -20 - Q3
Which statement best explains why a hot-air balloon rises when the air in the balloon is heated?
Some of the gas escapes from the bottom of the balloon, thus decreasing the mass of gas in the balloon. This decreases the density of the gas in the balloon, which lifts the balloon
Hot air rises inside the balloon, and this lifts the balloon.
The temperature of a gas is directly related to its volume. Thus, the volume of the balloon increases, making the density smaller. This lifts the balloon.
The temperature of the gas is directly related to its pressure. The pressure therefore increases, and this lifts the balloon
45sS9MT -IIj -20 - Q4
Why is gas easier to compress than liquid and solid?
Its volume increases more under pressure than an equal volume of liquid does.
The volume of gas particles is larger compared to the overall volume occupied by the gas.
The volume increases more under pressure than an equal volume of solid does.
The space between gas particles is much larger than the space between liquid or solid particles.
45sS9MT -IIj -20 - Q5
Consider a 1.0 L container of Neon gas at 273 K and 1 atm.
In which of the following conditions will the average kinetic energy increase?
I. The temperature increased to 1000 °C.
II. The temperature is decreased to 500 °C.
III. The volume has decreased to 0.5 L.
IV. The number of moles of neon is doubled.
I only
I and III
I, II, and IV
II only
45sS9MT -IIj -20 - Q6
Which type of gas is the basis for the kinetic-molecular theory?
Ideal gas
Smelly gas
Perfect gas
Real gas
45sS9MT -IIj -20 - Q7
Which does not belong to the group?
Carbohydrates
Phosphate
Proteins
Lipids
45sS10MT -IVc - d -22 - Q8
Which biomolecule is made of nucleotides and contains your DNA?
Carbohydrates
Nucleic Acid
Lipids
Proteins
45sS10MT -IVc - d -22 - Q9
What is the monomer for a protein from meat, fish, eggs, beans, bread, nuts, and seeds?
Nucleotide
Amino Acid
Monosaccharide
Triglyceride
45sS10MT -IVc - d -22 - Q10
Which food group is high in carbohydrates?
Butter ,oil, lard
Bread, pasta, grain
Apples, bananas, grapes
Meats, cheeses, milk, eggs
45sS10MT -IVc - d -22 - Q11
You need a steady supply of amino acids in your diet to maintain a healthy body. To meet this need, you should make sure you eat enough of which class of biomolecule?
Proteins
Lipids
Carbohydrates
Nucleic Acid
45sS10MT -IVc - d -22 - Q12
Type of Biomolecules that is responsible for insulation and energy storage
Proteins
Carbohydrates
Lipids
Nucleic Acid
45sS10MT -IVc - d -22 - Q13
1. Which is/are TRUE about the Law of Conservation of Mass?
I. The mass of the reactants is equal to the mass of the product.
II. The number of atoms in the reactant is the same as the number of atoms in the product.
III. The number of moles in the reactants is the same as the number of moles in the product.
IV. The masses of the reactant and product are the same, but the moles are different.
I, II, III
II, III, IV
II and IV
I and II
45sS10MT -IVe - g -23 - Q14
How many atoms of the elements should be on the product side after the chemical reaction?
More than the reactant
It doesn’t matter.
Less than the reactant.
Same as the reactant
45sS10MT -IVe - g -23 - Q15
Which chemical equation will have equal masses from the reactant and product side?
H2O2(aq) → H2O (l) + O2 (g)
NaHCO3 (aq) + CH3COOH (aq) → H2CO3 (aq) +NaCH3COO (aq)
Al(s) + 6HCl (aq) → AlCl3 (aq) + 3H2(g)
C6H10O5(s) + O2 (g) → 6CO2 (g) + H2O (l)
45sS10MT -IVe - g -23