Elements and Compounds
True/False: Gold is a compound
What is false?
The positive parts of the atoms, found in the nucleus
Protons
This science tool helps to measure the mass of an object
Scale/triple beam balance
An example of something that does not dissolve in water
Oil, sand, etc.
If something goes wrong (spills, fire, etc.) this is always the first thing you do
Tell your teacher
These negatively charged subatomic particles are the main component of electricity
What are electrons?
A graduated cylinder measures volume in these units
Milliliters
2 Examples of Personal Protective Equipment worn in a chemistry lab
Goggles, Lab Apron
Elements are only made up of one type of this particle
Atoms
A molecule of water has this many atoms
Three
How can we separate a mixture of sand and water?
What is filtration?
In case of fire, name two tools that help to put it out
Fire Extinguisher & Fire Blanket
Niehls Bohr thought that the electrons revolved around the nucleus, similar to how the planets do, in these types of paths
Orbits
How we can separate a mixture of salt and water?
Distillation
A substance has pH=2, so it is...
What is acidic?
Used only with volatile substances which produce dangerous gases
Elements with unstable nuclei prone to decay are said to be this
Radioactive
Two possible sources of heat in a chemistry experiment
Hot plate & Bunsen Burner
When a solution can have no more solute dissolved in it.
What is saturated
Three things you can do to keep yourself safe during a lab
No horseplay, read the directions, tell your teacher if something goes wrong, wear goggles etc