States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
Based on the selected correct unit, what is the value of x?
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Which type of glassware should be used to make this
solution (assuming that the accuracy of the concentration
is important)?
OB
O C
O A
Based on the selected correct unit, what is the value of x?
X =
250
Incorrect
5
How should the solute and solvent be mixed in the container?
How should the correct amount of solute be obtained?
O Measure out x mol of solid sucrose on a molemeter
O Measure out x cm of sucrose with a ruler.
● Measure out x g of solid sucrose on a balance.
Mix a small amount of water with the solute to dissolve it. Then, fill with water to the 250 mL mark.
O Fill the continer with water to the 250 mL mark. Then, add the solute.
O Add the solute. Then, fill the container to the 250 mL mark with water.
Question Source: McQuarrie, Rock, And Gallogly 4e - General Chemistry
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McQuarrie Rock Gallogly
A student needs to prepare 250 mL of a 0.100 M aqueous solution of sucrose, C₁2H22O₁₁ (aq), which is used frequently in
biological experiments.
12
200 mL
- 150
100
- 50
A
250 mL
200
150
100
B
Which type of glassware should be used to make this
solution (assuming that the accuracy of the concentration
is important)?
University Science Books
presented by Macmillan Learning
250 mL
C
11
Att
How should the correct amount of solute be obtained?
Measure out x mol of solid sucrose on a molemeter.
Question Source: McQuarrie, Rock, And Gallogly 4e - General Chemistry Publ
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