Physical Properties
What is the difference in transparency between Kool-Aid and cereal?
Kool-Aid is translucent, whereas cereal is transparent.
If a student adds 30 grams of sugar to 300 grams of water, what is the total mass?
330 grams
What was the student's prediction about objects with a mass greater than 9 grams?
They would sink in water.
How often do moon phases change?
Approximately every 29.5 days.
What is conservation?
Conservation is the practice of using resources wisely to prevent waste.
Why is cereal considered a mixture?
Cereal is made up of different ingredients that can be separated.
What happens to sugar when it is mixed into water?
The sugar dissolves in the water.
Would a wooden block or a nail float in water & why?
The wooden block would float because it is less dense than water.
What is the significance of the new moon phase?
It marks the beginning of the lunar cycle.
Why should we recycle?
Recycling helps reduce waste and conserves natural resources.
What does it mean if a substance is translucent?
A translucent substance allows some light to pass through but not detailed shapes.
Is Kool-Aid a mixture or a solution? Why?
Kool-Aid is a solution because the powder dissolves in water.
What does density refer to?
Density is the mass of an object divided by its volume.
Are moon phases the same everywhere on Earth?
Yes
What is one way to reduce water pollution?
Conserving water, Properly disposing of waste, Reducing runoff, Using fewer chemicals, Recycling, Reducing plastic use, or Composting...
Give an example of a physical property of water.
Water is a liquid at room temperature.
What is a characteristic of a mixture?
A mixture can be separated into its individual components.
Would a wooden block or an iron nail sink in water & why?
The iron nail would sink because it's more dense than water.
How many phases does the moon have?
There are eight lunar phases: new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, third quarter, and waning crescent
What does it mean to use natural resources sustainably?
Using resources in a way that meets our needs without depleting them for future generations.
How would you describe the physical state of a solid compared to a gas?
Solids have a definite shape and volume, while gases do not have a definite shape or volume.
Explain the difference between a mixture and a solution.
A mixture is a combination of substances that can be separated; a solution is a mixture where one substance dissolves in another.
Explain why some objects float even if they have a greater mass than 9 grams.
Some objects may have a larger volume, making them less dense than water.
Explain what causes the moon phases.
The moon phases are caused by the position of the moon relative to the Earth and the Sun.
How does turning off water while brushing teeth helps the environment?
It saves water, which is a limited resource, and reduces the energy needed to pump and treat water.