Atomic Structure
What is the charge of an electron?
Negative
Which metal is most commonly associated with rusting?
Iron
What is an alloy?
A mixture of two or more elements, at least one of which is a metal
What type of reaction is Mg + O₂ → MgO?
Synthesis
What does collision theory say about reaction rates?
Reactions occur when particles collide with enough energy
What do isotopes of the same element have in common?
Same number of protons, different number of neutrons
What trend in atomic radius is observed across Period 2?
It decreases from left to right
What is the correct formula for copper (I) chloride?
CuCl
Balance the following equation:
H₂ + Cl₂ → HCl
H₂ + Cl₂ → 2HCl
Name one way to slow apple browning.
Cooling
What is a cation?
A positively charged ion
Which element is more metallic: chromium or zinc?
Zinc
Write the formula for Lead (II) oxide.
(Drop and Swap)
PbO
What type of reaction breaks down one substance into simpler ones?
Decomposition
What happens to reaction rate when temperature increases?
Increases
How many protons are in element Y if it has 12 neutrons and a mass number of 24?
12 protons
What do elements in the same group have in common?
Same number of valence electrons
How many atoms are in Cr(OH)₃?
Cr(OH)₃?Cr = 1, O = 3, H = 3 → Total = 7 atoms
Is 2H₂ + O₂ → 2H₂O a synthesis reaction?
Yes
Why does increasing surface area of a solid reactant increase the reaction rate?
More collisions
What is the electron configuration of element Z with 17 electrons?
2, 8, 7
What is the atomic number of oxygen?
8
What is the total number of atoms in Mg(HCO₃)₂?
Mg = 1, H = 2, C = 2, O = 6 → Total = 11 atoms
Balance the following equation:
Al + O₂ → Al₂O₃
4Al + 3O₂ → 2Al₂O₃
Name four factors that affects reaction rate.