Anything that has a mass and occupies a space.
What is matter?
Draw a model that could represent H2O.
See Miss Scott's Image
2 or more elements chemically combined.
What is a compound?
What does the atomic number of an element tell us?
It tells us the number of protons in one atom of the element. It also tells you the number of electrons before the atom has bonded to anything since an atom is neutral.
What is the difference between Iron (II) oxide and Iron (III) oxide?
Iron (II) oxide is made using the Fe 2+ ion, and Iron (III) oxide is made using the Fe 3+ ion.
What is an example of an endothermic reaction?
Baking Soda & Vinegar
How many atoms are in the molecule: C6H12O6
6 C + 12 H + 6 O = 24 atoms
Explain the difference between the physical properties of malleability and ductility.
A substance is malleable if it can be pounded into sheets. A substance is ductile if it can be stretched into a long wire.
Name this compound (you can use the periodic table) and tell if it is molecular or ionic: PF5
phosphorus pentafluoride, molecular
Name 3 chemical properties of any substance.
Reaction with acids
Reaction to water
Reaction to heat
Behaviour in air
Ability to burn
What is the chemical formula for potassium nitride? Is it ionic or molecular compound?
K3N, Ionic
Turn this chemical equation into a word equation: FeO + NaCl --> FeCl2 + Na2O
iron (II) oxide and sodium chloride makes (produces or yields) iron (II) chloride and sodium oxide.
How many protons, neutrons and electrons does Lithium have?
Protons = 3 Electrons = 3 Neutrons = 4
What are 4 indicators that a chemical change has taken place?
Change in colour
Change in smell
Formation of a gas or solid (precipitate)
Change in temperature
Ionic: Solid at room temperature (high melting and boiling points), conducts electricity, and forms crystals.
Molecular: Any state at room temperature (low melting and boiling points), poor conductors.
What is one similarity and one difference between combustion and corrosion?
Similarity: Require oxygen as a reactant.
Difference: Corrosion is a slower reaction.
What are 4 ways to increase the rate of a chemical reaction?
Add a catalyst
Increase temperature
Increase concentration of reactants
Increase surface area of reactants