#1
Which of the following is a fundamental property of matter?
#2
Which of the following is a physical property of a substance?
Reactivity
Density
Flammability
Toxicity
#3
Which of the following is an extensive property of matter?
Density
Temperature
Color
Volume
#4
Which gas is most abundant in Earth's atmosphere?
Oxygen
Carbon dioxide
Nitrogen
Argon
#5
What is the pH range for acidic solutions?
#6
What is the SI unit of temperature?
Kelvin
Celsius
Fahrenheit
Rankine
#7
Which property of matter is defined as the resistance to flow?
Density
Viscosity
Solubility
Malleability
#8
What is the purpose of titration in chemistry?
To measure temperature changes
To determine the concentration of a solution
To study radioactive decay
To analyze crystal structures
#9
What is the formula for calculating density?
Density = Mass/Volume
Density = Volume/Mass
Density = Mass + Volume
Density = Mass x Volume
#10
What is the Law of Conservation of Mass?
Mass is always created in a chemical reaction
Mass is always destroyed in a chemical reaction
The total mass of substances before a chemical reaction is equal to the total mass of substances after the reaction
Mass is constant only in physical changes
#11
What is Avogadro's number?
6.022 x 10^22
3.1416
9.8 m/s^2
2.718
#12
Which property of a gas is directly proportional to its temperature in Kelvin?
Pressure
Volume
Density
Molarity
#13
What is the principle behind Archimedes' buoyancy concept?
Objects at rest stay at rest
An object immersed in a fluid experiences an upward buoyant force equal to the weight of the fluid displaced by the object
The rate of change of momentum is directly proportional to the applied force
Energy cannot be created or destroyed, only converted from one form to another
#14
What is the main purpose of a spectrophotometer in chemistry?
Measuring mass
Determining volume
Analyzing electromagnetic spectra
Detecting odors
#15
What is the significance of the triple point of water in thermodynamics?
It defines the freezing point of water
It defines the boiling point of water
It establishes a standard for temperature measurement
It is used to measure the specific heat capacity of water