Scientific Tools
This tool measures temperature by detecting the expansion of a liquid or the response of a digital sensor.
What is a thermometer?
The ozone layer is found in this part of Earth’s atmosphere, above the troposphere.
What is the stratosphere?
The first step of the scientific method, where a scientist notices a problem or pattern.
What is making an observation?
Mass is a measure of the amount of this in an object.
What is matter?
Finish this statement: the definition of chemistry is_____
What is the scientific study of matter and the changes it undergoes?
This tool uses lenses to magnify objects too small to see with the naked eye, like bacteria.
What is a microscope?
The ozone layer blocks most of this type of radiation that causes skin cancer.
What are ultraviolet (UV) rays?
An educated guess that predicts the outcome of an experiment is called this.
What is a hypothesis?
Weight is a measure of matter and this property.
What is the effect of the Earth's gravitational pull?
The chart that organizes all known elements by their properties is called this.
What is the periodic table?
A triple-beam balance measures this property of matter in grams.
What is mass?
In the 1980s, scientists noticed a thinning of the ozone layer mainly above this region.
What is Antarctica?
The variable that a scientist deliberately changes in an experiment is called this.
What is the independent variable?
What is the local acceleration of gravity?
When two or more elements are chemically bonded together, they form this.
What is a compound?
A precaution in the lab to protect eyes.
What is safety glasses /goggles?
Chlorofluorocarbons (CFCs) were once common in spray cans and refrigerators. These chemicals break down ozone into this common gas.
What is oxygen (O₂)?
The variable that responds or changes because of what the scientist did is called this.
What is the dependent variable?
Why does your mass stay the same on the Moon but your weight changes?
Because mass is the amount of matter, but weight depends on the strength of gravity.
Chemistry as the base of many sciences is called _____.
What is central science?
Scientists use this tool to measure the exact volume of a liquid during experiments, especially titrations.
What is a burette or pipette?
In 1987, leaders from nations met to sign this document.
What is the Montreal Protocol?
When scientists conduct research to solve a specific problem.
What is applied research?
Scientists use models to do this thing.
What is testing a concept it is mass produced?
Many of the conveniences we enjoy today are due to?
What are the technological applications of chemistry?