Measurement & Math
Convert 2.5 km to meters.
What is 2,500 m?
Is melting ice a physical or chemical change?
What is a physical change?
What particle has a positive charge?
What is a proton?
What are the vertical columns on the periodic table called?
What are groups (or families)?
Which has a shorter wavelength: red or blue light?
What is blue light?
Write 0.00045 in scientific notation.
What is 4.5 x 10-4?
Which property best describes metals: brittle or malleable?
What is malleable?
What is the difference between an atom and an ion?
An ion has either gained or lost an electron.
What group are the noble gases found in?
What is group 18 or 8A?
What is the equation relating speed, wavelength, and frequency?
What is c =(lamda) x (v)
How many significant figures are in 0.004560?
What is 4 sig figs?
Give one physical property of water.
What is boiling point 100*C?
What is liquid at room temperature?
What is density 1 g/ml?
What does the mass number represent?
Which is more reactive: sodium or potassium?
What is potassium?
What is the electron configuration for oxygen (O)?
What is 1s22s22p4?
Convert 350 mL to Liters.
Burning magnesium produces a bright light and a new substance. What type of change is this?
What is a chemical change?
How is an isotope different from a regular atom?
Same number of protons, different number of neutrons.
Across a period, electronegativity generally...
What is increases?
How many valence electrons does nitrogen have?
What is 5 valence e-?
A student graphs time (x) vs. temperature (y). If temperature increases as time increases, what type of relationship is this?
List two differences between metals and nonmetals.
Metals: shiny, conduct heat/electricity, malleable; Nonmetals: dull, poor conductors, brittle
Calculate the number of neutrons in Carbon-14.
What is 8 neutrons?
Arrange in order of increasing atomic radius: Li, Na, K.
Li<Na<K
Draw the Lewis structure for chlorine.
Cl surrounded by 7 dots (1 unpaired)