The scientific method
What is a hypothesis
An educated guess about what you think the solution to the problem is
What are the 3 subatomic particles inside an atom
protons, neutrons, and electrons
Which atom is larger Bromine (Br) or Barium (Ba)?
Barium (Ba)
What is matter?
Anything that has mass and takes up space
What is an ion?
An atom that has a charge because there is an uneven number of protons and electrons
Why do you have to analyze data
Data doesn't have an explicit meaning and it has to be interpreted.
What is the atomic number?
The number of protons and what determines the identity of the atom
Which atom is more electronegative? Nitrogen (N) or Phosphorus (P)
Nitrogen (N)
What is the formula to solve density problems?
D = (m/v)
What is a ion with a positive (+) charge called
Cation (+)
Cats have paws, and cations are PAWSative
How do senses relate to observations
Observations notice change and our senses detect them
Which subatomic particles contribute to an atom's mass?
Protons and neutrons
What is electronegativity?
A measure of how much an atom wants electrons
What does it mean that density is a physical property?
Physical properties are properties that describe an object. For example, the color gold is unique to gold so, all gold has that color. In a similar way density will be another thing that is unique to each element.
What is a negative (-) ion called?
What is CER
Claim, evidence, and reasoning; it is a way of arguing that is used a lot in scientific writins
What was important about the cathode experiment?
It discovered the electron!
Atoms are in the same column in the periodic table, and have the same number of valence electrons and react similarly
A block of wood weighs 100 grams and is measured to be 10 cm^3 in volume what is its density?
10 g/cm^3
An atom has 10 electrons and 7 protons. What is the charge and what type of ion is it?
-3 and an anion
What are the 6 steps of the scientific method in order?
Question, hypothesis, experiment, data, analysis, and report
What was important about the gold foil experiment?
It discovered that the atom is mostly empty space with a dense nucleus
Who created the modern-day periodic table?
Dimitri Mendelev
What is the mass of a block of wood if it has a density of 5 (g/cm^3) and a volume of 10 cm^3?
50 g
An atom has 8 protons, 8 electrons, and 9 neutrons. What is the charge and what type of ion is it?
No charge protons = electrons, not an ion