Law of Conservation of Mass
Atom Models
Protons, Neutrons, Electrons
Isotopes
Cathode Ray and Gold Foil Experiments
100
The Law of Conservation of Mass states...
What is mass is neither created nor destroyed in a chemical reaction?
100
What model is this?
What is Bohr's Model?
100
What is the charge of protons?
What is positively charged?
100
What is an isotope?
What is a different version of the same element?
100
Who conducted the cathode ray experiment?
Who is JJ Thompson?
200
A student puts 26.4 grams of baking soda in a balloon and ties it over the top of the bottle containing 50 grams of vinegar. After 40 minutes passes, there is only 60 grams of liquid and baking soda at the bottom of the bottle but the balloon is blown up. What is the best explanation for this
What is a chemical reaction occurred and some of the atoms were rearranged to form new substances which filled the balloon with gas?
200
What is in the center of a Bohr's atom model?
What is the nucleus?
200
What is the heaviest subatomic particle?
What are neutrons?
200
Isotopes have the same _____, but different _____.
What is protons/neutrons?
200
Ernest Rutherford conducted the gold foil experiment.
True
300
How much oxygen would add with 36 grams of carbon to give 132 grams of carbon dioxide?
What is 96 grams?
300
What surrounds the nucleus in a Bohr model?
What are orbitals?
300
What component is not included in the nucleus?
Protons, electrons, or neutrons
What are electrons?
300
How many neutrons does C-13 have?
What are 7 neutrons?
300
What did the cathode ray experiment discover?
What is it proved that cathode rays were composed of negatively charged particles called electrons?
400
In a reaction, 10 grams of hydrogen reacts with 80 grams of oxygen. What is the total mass of the water produced?
What is 90 grams?
400
How many valence electrons does oxygen have in this atom model?
What is 6 valence electrons?
400
Carbon has 7 electrons.
False
400
How many protons are in the isotope Cl-35?
What is 17 protons?
400
What did the gold foil experiment prove?
What is it proved that atoms are mostly composed of empty space with a small, positively charged nucleus in the middle?
500
A scientist chemically combines 25 grams of hydrogen with 50 grams of oxygen to form water. After the chemical reaction is complete there are only 72 grams of water. Which best explains why the total mass is reduced?
What is a gas was produced?
500
What atom is this?
What is lithium?
500
Which element has more protons?: Fluorine or Carbon?
What is fluorine?
500
Magnesium-24 has 12 protons.
True
500
What experiment is this?
What is cathode ray experiment?