Let’s get Physical (or Chemical)
Ice turns into water and then into steam!
What is a Physical Change
A Hydrocarbon reacts with oxygen to make an explosion of heat and light!
What is a A combustion reaction?
H₂ + O₂ → H₂O
2 H₂ + O₂ → 2 H₂O
A block of metal has a mass of 50 g and a volume of 10 cm³. What is its density?
5 g/cm3
These are the 3 subatomic particles that make up an atom. Don't forget to mention their charge~
What is a Proton(+), Neutron (no charge), and electron (-)
I left my iron in water too long and now rust has formed!
What is a Chemical Change?
This type of chemical reaction occurs when an acid and base are combined
What is A neutralization reaction?
Na + Cl₂ → NaCl
2 Na + Cl₂ → 2 NaCl
A liquid has a density of 2 g/mL. What volume is occupied by 24 g of this liquid?
12 mL
These determine how likely an element wants to bond with another element!
What are Valence Electrons?
Do you like fire? Well wood burning is this type of reaction!
What is a Chemical Reaction?
This is an example of chemical reaction occurs when 2 reactants become 1 product
2 H₂ + O₂ → 2 H₂O
What is a Synthesis (combination) reaction?
Al + O₂ → Al₂O₃
4 Al + 3 O₂ → 2 Al₂O₃
An astronaut has a weight of 50 N on Earth (g = 10 m/s2). On Mars (g=4 m/s2), what is their weight?
40 N
This group and family of elements are the most stable having 8 valence electrons!
What are the noble gases, group 18
When comparing whether something floats or sinks is this type of property
What is a Physical Property?
This is an example of this reaction where 1 element bonds with another to become stable
Zn + CuSO₄ → ZnSO₄ + Cu
What is a single replacement reaction
C₃H₈ + O₂ → CO₂ + H₂O
C₃H₈ + 5 O₂ → 3 CO₂ + 4 H₂O
How many total atoms are in one unit of Al₂(SO₄)₃?
17 atoms
This Law states that in a closed chemical reaction that atoms on both sides must be equal!
What is the Law of Conservation of Mass
I want to bake a pizza, I turn on the oven and cook it for 20 minutes. This type of chemical reaction occurs
What is a Endothermic Chemical Reaction?
This is an example of when 2 element ‘switch partners’ in order for both of them to become stable
NaOH + HCl → NaCl + H₂O
What is a Double Replacement Reaction?
FeCl₃ + NaOH → Fe(OH)₃ + NaCl
FeCl₃ + 3 NaOH → Fe(OH)₃ + 3 NaCl
What is the mass in grams of 2.00 moles of carbon atoms (C, mass = 12 g/mol)?
24 grams
A student mixes hydrochloric acid (HCl) with sodium hydroxide (NaOH). Write the balanced chemical equation.
HCl + NaOH → NaCl + H₂O