Chemical Equations
Balance this equation: H2 + Cl2 → HCl
What is H2 + Cl2 → 2HCl?
A student walks 30 meters in 6 seconds. What is the student’s speed?
What is 5 m/s?
This unit measures force.
What are newtons (N)?
Balance this equation: Mg + O2 → MgO
What is 2Mg + O2 → 2MgO?
A 4 kg box accelerates at 3 m/s². What force acts on the box?
What is 12 N?
This unit measures work.
What are joules (J)?
Balance this equation: N2 + H2 → NH3
What is N2 + 3H2 → 2NH3?
A 10 kg object falls because Earth pulls it downward. What is the acceleration?
What is 9.8 m/s2?
This unit measures power.
What are watts (W)?
Balance this equation: Na + Cl2 → NaCl
What is 2Na + Cl2 → 2NaCl?
A worker pushes a box with 50 N of force for 4 meters. How much work is done?
What is 200 J?
This unit measures speed.
What are meters per second (m/s)?
Balance this equation: N + O2 → Fe2O3
What is 4N + 3O2 → 2N2O3?
A machine does 600 J of work in 30 seconds. What is its power?
What is 20 W?
This unit measures acceleration.
What are meters per second squared (m/s²)?