A student wants to test whether the type of liquid affects how fast a sugar cube dissolves. Which variable should be the independent variable?
Nature Of Science And Engineering
Question · Medium
The houseplant does both
Short
Which statement best describes the difference between a scientific theory and a scientific hypothesis?
Introduction & Exam Overview
1.1 Current Exam Facts
Study guide
During a lab using a Bunsen burner, what is the most appropriate first response if a student's sleeve catches fire?
An engineer is using the engineering design process. After building and testing a prototype that fails, which step should typically come next?
Which of the following is the best example of a controlled experiment?
Same battery. Which lets more through?
A teacher wants students to understand why scientific knowledge is considered durable but not absolute. Which point best conveys this idea?
1.2 SEPs and Teaching-Scenario Questions
What is the primary purpose of having a large sample size in a scientific study?
Which lab safety practice is most important when handling concentrated hydrochloric acid?
Question · Easy
A graph shows that as fertilizer concentration increases, plant height increases up to a point and then decreases. What is the best interpretation?
Which of the following best illustrates how scientific advances and society influence each other?
Nature of Science and Engineering
2.1 Nature of Scientific Knowledge and Inquiry
A student measures the mass of an object three times and records 24.1 g, 24.2 g, and 24.0 g. The accepted value is 24.1 g. These measurements are best described as:
Which question is testable through a scientific experiment?
When designing a solution to an engineering problem, what do criteria and constraints represent?
A peer-reviewed journal article is generally considered a reliable scientific source primarily because:
2.2 Engineering Design Process
An atom has 11 protons, 12 neutrons, and 11 electrons. What is the atomic number and the identity of this atom?
Physical Science
Which subatomic particle has a negative charge and the smallest mass?
On the periodic table, elements in the same group (vertical column) generally share which property?
Which of the following is a chemical change rather than a physical change?
2.3 Laboratory Safety, Materials, and Equipment
In the balanced equation 2H2 + O2 -> 2H2O, what does the coefficient 2 in front of H2O indicate?
Which statement correctly describes the law of conservation of mass in a chemical reaction?
A solution with a pH of 3 is best described as:
An object travels 100 meters in 20 seconds at constant speed. What is its average speed?
Science, Technology, Society, and the Environment
3.1 Interdependence of Science, Engineering, and Technology
According to Newton's second law, if the net force on an object is doubled while its mass stays the same, the acceleration will:
A book rests motionless on a table. Which statement best explains the forces acting on it?
Which of the following is an example of potential energy being converted to kinetic energy?
Which process transfers thermal energy through the direct contact of particles, such as a metal spoon heating up in hot soup?
3.2 Environmental and Societal Impacts
A wave has a frequency of 4 Hz and a wavelength of 2 meters. What is its speed?
Which property of a sound wave is most closely related to its perceived loudness?
In a simple series circuit, what happens to the total current if a second identical resistor is added in series with the first?
Which statement correctly describes the relationship between electricity and magnetism?
3.3 Energy Production and Natural Resources
Which list correctly orders the states of matter from lowest to highest average particle kinetic energy at constant pressure?
When salt (NaCl) dissolves in water, the resulting mixture is best classified as a:
An object has a mass of 50 grams and a volume of 10 cubic centimeters. What is its density?
Which of the following correctly describes an exothermic reaction?
3.4 Everyday Applications of Science and Technology
What type of bond forms when a metal atom transfers one or more electrons to a nonmetal atom?
A 2 kg object is lifted to a height of 3 meters. Using g = 9.8 m/s^2, what is its gravitational potential energy?
Question · Hard
Which statement best explains why a helium balloon rises in air?
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