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Scientific Method
Metric System
Classify Matter
Atoms
Periodic Table
100
What format do we use to write a hypothesis?
If..., then...
100
The metric system is based on the number _____.
ten / 10
100
Which state of matter has no definite shape or volume?
gas
100
Which subatomic particle is negative?
electron
100
rows are called ________________ and columns are called ________________
periods, groups
200
What is a hypothesis?
A possible answer to our question that is testable.
200
How many grams are in 1 kilogram?
1000
200
Which state of matter has the lowest energy of its particles?
solid
200
What is in the nucleus of an atom?
protons and neutrons
200
How many valence electrons are in an atom of gallium?
3
300
What is an independent variable?
the part of the experiment that we change
300
What is the base unit for length?
meter
300
Is the following substance an element, compound, homogeneous mixture, or heterogeneous mixture? water
compound
300
How many neutrons does an atom of phosphorus have?
31 - 15 = 16
300
Ionization energy and electronegativity ____________________________ on the Periodic Table.
increase going up and right
400
What is a dependent variable?
what we measure (what changes in response to the independent variable)
400
List the prefixes in order from smallest to largest.
milli - centi - deci - deca - hecto - kilo
400
Is the following substance an element, compound, homogeneous mixture, or heterogeneous mixture? copper
element
400
J.J. Thomson used his cathode ray experiment to discover the existence of the ______________.
electron
400
The attraction to the nucleus felt by the valence electrons of an atom is called the ________________.
effective nuclear charge
500
What do we call the parts of the experiment that must be kept the same the whole time?
constants
500
How many centimeters are in 2.5 meters?
250 cm
500
Is the following substance an element, compound, homogeneous mixture, or heterogeneous mixture? steel alloy
homogeneous mixture
500
Name 3 types of orbitals.
options: s, p, d, and f
500
What is the formula for effective nuclear charge?
z eff = z - s = atomic number - core electrons