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4TH Q LONG TEST (SET C)
Quiz by ARRIANE JOY ISORENA
Tag the questions with any skills you have. Your dashboard will track each student's mastery of each skill.
Which of the following is a shorthand notation that represents substances undergoing chemical reactions?
Some changes are readily observable when chemical reactions take place. Which of the following evidence of chemical change explains the curdling of milk?
Which of the following properties DOES NOT describe a gas?
In the equation for Boyle’s Law, P1stands for:
A sample of helium gas is heated from 150C to 300C. This heating process causes the gas to expand to a volume of 585 cm3.What was the original volume of the helium gas?
How will you convert Celsius temperature to Kelvin?
When the temperature of a gas goes down, what happens to its volume?
Which of the following biomolecule contains carbon, nitrogen, oxygen, phosphorus and hydrogen in its structure?
How many atoms of hydrogen (H), sulfur (S), and oxygen (O) are there in sulfuric acid (H2SO4)?
In the given chemical reaction, what will be the correct count for the atoms of the reactants? CH4+ 2O2 --> CO2 + 2H2O
A student mixes two solutions, planning to produce carbon dioxide. Which of the following is the BEST evidence that a chemical reaction is producing carbon dioxide?
Which of the following demonstrates that a new substance can be formed from a chemical reaction?
The reaction between hydrogen gas and oxygen gas forming water can be expressed in this equation, H2 + O2 --> H2O. To balance the equation, what are the coefficients needed in the given order for hydrogen, oxygen, and water?
Notice that like mathematical equations, chemical equations also have signs. What symbol is used to indicate “reacts with”?
Chemical changes are always represented by chemical equations. What entities are usually located on the right side of a chemical equation?
The __________ are the substances that react at the beginning of the chemical reaction.
The illustration below simulates what type of chemical reaction?
A + B --> AB is what type of reaction?
The following are the different types of chemical reactions EXCEPT:
There are two reactants in a chemical reaction, and one product. The mass of the product is 30g. The mass of the first reactant is 17g. what must the mass of the second reactant be, if the equation is to follow the law of conservation of mass?
When the equation, Fe + Cl2 --> FeCl3 is balanced, what is the coefficient for Cl2?
How is a chemical equation balanced?
In a closed system, a chemical reaction takes place. The mass of the reactants in the beginning of the reaction is 25g. At the end of the reaction, what must the mass be to follow the law of conservation of mass?
The law of conservation of mass states that matter is neither created nor __________.
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 of these substances?
Junk foods contain fatty acids which makes the heart unhealthy. What kind of fat is it?
What group of compounds are fats, waxes, and oils?
What carbohydrates are best to include in your eating habit?
Disaccharides are double sugars. Which one is not a disaccharide?
What are the components of carbohydrates?
Tires usually explode during summer. Which best explains this observation?
Whichof the following is TRUE?
A132 mL of gas is measured at 38oC. If the pressure remains constant, what will be the volume of the gas at 10oC?
Jacques Alexandre Charles performed an experiment in a balloon, hot water, and cold water. Which of the following statements is proposed in Charles’ Law?
Which among the units of measurement below can be the correct unit of temperature?
(i)Celsius degree (oC)
(ii)cubic meter (m3)
(iii)Fahrenheit (oF)
(iv)Kelvin (K)
At 5 atm, a given sample of a gas occupies 75 L. The gas is compressed to a final volume of 30 L at constant temperature. What is the final pressure?
A sample of a gas has a volume of 20 L at 1.5atm. What will be the volume of this gas at 2.0 atm pressure?
Boyle’s Law experiment showed that as the volume decreases, the pressure increases which pertains to an inversely relationship. What is the mathematical expression of Boyle’s Law?
The four measurable properties of gases such as pressure, volume, temperature, and number of moles are related to each other. Which of the following statements was proposed by Robert Boyle?
Scientists have observed some activities involving gases. Which of the following is formulated and explains the behavior of gases?