Periodic Table
This elements chemical symbol is He
What is Helium?
How many laws of motion does Newton have?
Is melting ice a physical or chemical change?
Physical
The Law of Conservation of Mass states: Mass is neither ___ nor ___.
Created, Destroyed
Which type of EM wave has the longest wavelength?
Radio Waves
What is the atomic mass of Titanium (Ti)
What is 47.867
Newton's 1st law is known as the law of?
Inertia
Burning wood is what kind of change?
Chemical
In a closed system, if you start with 50g of reactants, how much product should you end with?
50g
The atom of a nucleus contains...
Protons & Neutrons
What do elements in the same group (column) have in common
Same number of valence electrons, similar chemical properties
What is the formula for Newtons second law?
F=ma
A rusting iron nail is an example of what?
Chemical
In a reaction, 10 g of hydrogen reacts with 80 g of oxygen. What is the total mass of the water produced?
90 g — The mass of the products equals the mass of the reactants.
When water boils, this shows what type of thermal energy?
Convection
This is the number of electrons the most reactive elements have
What is 1 or 7 electrons?
If a 2 kg object accelerates at 3 m/s², what force is applied?
F= 6 N
What evidence might tell you a chemical change has occurred? Name at least 2
(Color change, gas produced, temperature change, precipitate forms)
This is the name of the number in front an element in a balanced/unbalanced equation.
Coefficient
What type of decay can sterilize medical equipment?
Gamma Decay
These are the 3 groups, elements are classified under
what is metals, non-metals, and metalloids?
Why do you keep moving forward in a car when it suddenly stops?
Inertia - Newton’s 1st Law
Crushing a can vs. reacting baking soda and vinegar: explain the difference in terms of type of change.
Crushing = physical, reaction = chemical due to gas formation and new substance
Balance this equation: H₂ + O₂ → H₂O
2H₂ + O₂ → 2H₂O
In a velocity vs time graph. A straight line represents
Constant speed