What is a hypothesis?
Which statements are true (select 2)
The Scientific Method is a series of steps followed to cause problems, including collecting data, ignoring a hypothesis, NEVER testing the hypothesis, and stating conclusions without evidence.
Qualitative vs Quantitative Data. Select the statement that is true.
Define accuracy.
A child requires a 5 ml dose of medicine each day. How many doses would a 1 L bottle of this medicine contain?
Which of the following is an example of a "Base" unit?
Molecular motion refers to the movement of molecules, which are the fundamental building blocks of matter. This movement is influenced by temperature, with higher temperatures generally leading to increased molecular motion.
In which state of matter is there the most molecular motion?
A student creates diagrams of two models to show magnified views of molecular motion in a solid and a liquid, as shown in the picture.
Answering which question will help the student to decide which sample has more energy?
Absolute zero represents a substance's minimum
Which options are TRUE for substance W (the blue one)? (You should pick 3 options to be correct).
According to kinetic molecular theory, as the temperature of a confined gas rises, which of the following characteristics of the gas molecules increases?
Which states of matter are most likely represented by each diagram?
Recall the formula to calculate density.
What is the density of an object that has a volume of 600 milliliters (mL)?
Read the text about an experiment with bottled soda.
Which statement describes a result of the experiment?
According to the gas laws..... when the temperature of a substance increases, what will happen to the volume of the substance?
Which of the following statements concerning a saturated solution is incorrect?
What is true about the relationship between pressure and volume of a gas?
The graph shows how the volume of helium gas changes as the temperature of the gas changes.
The measurements were taken at a constant pressure. What happens as the temperature of helium increases?
A football is left on the field outside during the winter months, the next morning the football was partially deflated. Using what you know about gas laws, explain what happened to the football.
If a gas stays at a constant pressure as the temperature of the gas is decreased, what will happen?
A rock is placed in a bucket of water and sinks to the bottom. What can be concluded about the rock's properties relative to the water?
Terry fills two balloons with the same amount of helium gas. She places one of her helium balloons in the freezer. After twenty minutes, she removes the balloon from the freezer and notices that it is smaller than the balloon that stayed at room temperature. Her balloons are shown below.
How does Terry correctly explain the difference in the size her balloons?
Which of the following statements concerning a saturated solution is incorrect?
A teacher puts solid adjustable air freshener (as seen above) in his classroom and let's it sit open for a week. At the end of the week the solid is gone, but no liquid was seen. What phase change can explain what occurred?
Which type of energy is associated with the random motion of the particles in a sample of gas?
Which image most likely represents the atomic structure of solid ice?
Which of the following statements best describes absolute zero?
What is true about the relationship between pressure and volume of a gas?
A container of gas is kept at constant pressure. Which best explains what will happen to the volume if the temperature of the gas is increased?
Which change would cause the volume of a balloon to increase?
Three identical bottles of soda are used in an experiment. One of the bottles is left at room temperature, another is cooled, and another is heated. Next, the bottles are opened and balloons are placed on top to capture the escaping gas. The temperatures and results are shown.
Which statement is true about the warmest bottle (40'C)?
Which statement is most likely true about the intermolecular attractions between the molecules in Figure 3 compared with Figure 1?
Which image correctly models the molecular arrangements in solids, liquids, and gases?
What happens to the molecules of a substance when heat (energy) is removed?
What is it called when a substance loses or gains energy to change from one state of matter to another?
Which of the following would increase the (gas) pressure of a system?
As viscosity increases, the _______________________________ also increase.
How are you? Any thoughts or concerns? Just tell me anything that you feel like (hey now, be nice) and you get the points.