Lab Safety
Give 3 examples of personal protective equipment (PPE)
Answers will vary. Gloves, goggles, apron
This type of graph is best for showing changes over time
line graph
On a position vs time graph, this quantity is found by calculating the slope
Velocity
Compounds formed between metals and nonmetals and involve electron transfer.
What are ionic compounds?
This prefix means “one thousand.”
What is kilo-?
Which lab rule is meant to prevent chemicals or broken glass from getting in your eyes?
Wear goggles
What type of correlation is shown as one variable increases and the other decreases?
Positive
What is the equation we use to calculate velocity? This equation can also be rearranged to solve for time and distance.
v = change in x / change in t
This tool shows an element’s protons, electrons, and shells using rings around the nucleus.
What is a Bohr model?
These units measure mass, volume, and temperature in the metric system.
Grams, liters, and Celsius (or Kelvin)
Why should you never eat or drink in the lab?
To avoid contamination or ingesting harmful substances.
What type of relationship do variables have when there is no clear pattern or trend shown on the graph?
No correlation
A horizontal line on a position vs time graph indicates the object/person is doing what?
Not moving
Na⁺ and Cl⁻ combine to form this ionic compound.
What is sodium chloride?
Place these unit prefixes in the correct order (deca, deci, hecto, centi, kilo, [base], milli)
milli, centi, deci, [Base], hecto, deca, Kilo
Why must all students know the rules of lab safety?
To prevent accidents and ensure a safe working environment
This type of graph is best for showing parts of a whole
Pie chart
A horizontal line on a velocity vs time graph indicates the object/person is doing what?
Moving at a constant velocity
This notation shows the chemical symbol, mass number, and atomic number together.
What is nuclide notation?
This system, unlike the metric system, uses inches, feet, and pounds.
The imperial system
What is the chemical safety symbol for electrical hazards
lightning bolt or electrical cord
What does the acronym TAILS stand for?
Title Axes Intervals Labels Scale
Describe the motion of an object/person when the velocity vs time graph shows a negative correlation.
The object/person is slowing down
Compounds made of two or more nonmetals that share electrons.
What are covalent compounds?
This is the metric prefix that means one-tenth, and the one that means one-hundredth, mixing them up can cause major conversion errors.
deci and centi