Experimental
Design
Design
What type of variable is the same in all trials and test conditions?
Control Variable
What are the three subatomic particles and their respective charges?
Protons - positive
Neutrons - neutral
Electrons - negative
What are atoms of the same element that have different mass numbers?
Isotopes
According to the Guinness Book of Records the heaviest baby ever born weighed 29 lbs 4 oz. (29.25 lbs). What was the baby’s mass in kilograms?
Note: 1 lb = 0.454 kg
13.28 kg
Most of the elements on the periodic table are what classification?
Metals
Chemistry Cat wants to know if her purring will result in her getting more treats. What is the independent variable?
Purring
Every atom of a given element has the same number of what?
Protons
Which one represents isotopes?
A. 158 X 157 X
B. 126 X 146 X
C. 157 X 168 X
B
Randy Gardner made headlines in 1964 for staying awake for 11 days and 25 minutes. How many hours is this?
264.42 hours
What is the definition of matter?
Anything that has mass and takes up space.
Ronald Weasley believes that if he eats before studying, his test scores will improve. What is the dependent variable?
Test Scores
What particles are counted for an element’s mass number?
Protons & Neutrons
Calculate the average atomic mass of Mg.
Isotope 1 - 23.985 amu (78.99%)
Isotope 2 - 24.986 (10.00%)
Isotope 3 - 25.982 (11.01%)
24.31 amu
In 2018, to celebrate Nepalese culture, Bandana Nepal danced for 5.25 days straight. How many minutes is this?
7560 minutes
Density, color, and melting point are all examples of what type of property?
Physical Properties
Ms. Conlon wants to make a graph of the themes from Spirit Weeks over the years. What would be the independent AND dependent variable?
Independent: Year
Dependent: Theme
The smallest and lightest subatomic particle is the ___?
Electron
Calculate the average atomic mass of Neon.
Isotope 1 - 19.9924 (90.48%)
Isotope 2 - 20.9939 (0.27%)
Isotope 3 - 21.9914 (9.25%)
20.18 amu
The highest dog jump recorded was by Feather in 2014. Feather jumped 191.7cm. How many km is this?
0.001917 km
Rows of the Periodic Table are called ___ while columns are called ____.
Row = Periods
Columns = Groups or Families
When creating graphs, which variable goes on the X-axis and which goes on the Y-axis?
X: Independent
Y: Dependent
How many of each element is present in the compound: Fe2(NO3)3?
Fe: 2
N: 3
O: 9
What is the difference between the atomic mass listed on the periodic table and the atomic mass of any given atom?
On the Periodic Table, the atomic mass is a decimal because it is a calculated, weighted average of all known isotopes. Any one atom of a given element will have a whole number as a mass because you can't take 0.49 of a neutron or 0.12 of a proton.
The current gambling loss limit is $500.00 per day. If you gambled for 30 days and lost the limit per day, how many pennies did you lose?
1,500,000 pennies
WHOA
The reason all elements in the same group have similar properties is due to ________.
Same number of valence electrons