Chemical Formulas & Reactions
How many hydrogen atoms are in H₂O?
What is 2?
Freezing water is what type of change?
What is a physical change?
Speed equals distance divided by ______.
What is time?
Plates moving away from each other form what type of boundary?
What is a divergent boundary?
Water that soaks into the ground and fills spaces in soil and rock is called ______.
What is groundwater?
How many total atoms are in CO₂?
What is 3 atoms?
Rusting iron is what type of change?
What is a chemical change?
A car travels 120 km in 2 hours. What is its average speed?
What is 60 km/h?
Plates colliding and forming mountains is what type of boundary?
What is a convergent boundary?
Runoff carrying fertilizer into rivers is an example of what type of human impact?
What is harmful impact on water systems?
In Na₂SO₄, how many oxygen atoms are present?
What is 4?
Burning wood produces ash and smoke. What type of change is this?
What is a chemical change?
On a distance-time graph, a straight slanted line represents ______ speed.
What is constant speed?
Plates sliding past each other form what type of boundary?
What is a transform boundary?
How do wetlands help protect nearby lakes?
What is by filtering pollutants from water?
How many total atoms are in Al₂O₃?
What is 5 atoms?
Breaking a glass bottle into pieces is what type of change?
What is a physical change?
If the line on a distance-time graph is flat, what is happening?
What is the object is stopped?
Mid-ocean ridges form at what type of boundary?
What is a divergent boundary?
Overfishing most directly affects what in an ecosystem?
What is population balance (food webs)?
In 4 molecules of CH₄, how many hydrogen atoms are present?
What is 16 hydrogen atoms?
Name one piece of evidence that proves a chemical change occurred.
What is formation of a new substance (gas, precipitate, color change, temperature change)?
An object travels 150 meters in 10 seconds. What is its average speed?
What is 15 m/s?
Why are similar fossils found on continents that are now far apart?
What is because the continents were once connected (evidence of plate tectonics)?
Explain one way humans positively impact ocean systems AND one way they negatively impact them.
What is conservation efforts (positive) and pollution/overfishing (negative)?