Lab Safety
What is the Power Shower best used for?
What changes in your experiment (what is the variable called)
dependent
What makes up an atom? (subatomic particles)
Protons, electrons and neutrons
Can an element be broken down farther.
No
evenly
What angle should you hold a test tube when you are heating it up?
45 degrees
True or false: the controlled variable is the variable that stays the same
True
Two atoms with different numbers of neutrons, but the same number of protons are called
What makes up an element? (how many types of atoms)
one type of atom
a heterogeneous mixture is a mixture where the compounds eventually _____.
Separate
True or False: When working with chemicals, it is the best practice to smell the chemicals directly, rather than wafting them towards you
False
What is qualitative data
things you describe with words (like color and texture)
Matter is anything that has ____________ and takes up ________________
Mass and Space
True or False: elements and compounds are pure substances
True
mixing water and oil is an example of what kind of mixture
Heterogeneous
How long do you need to wash your eyes out if you get chemicals in your eyes?
20 minutes
What is quantitative data?
Data that can be described with words.
True or False: neutrons orbit around the nucleus.
False- electrons
A _______________ is a substance that cannot be separated or broken down into simpler substances by chemical means
element
mixing water and sugar is an example is what kind of mixture
Homogeneous
What does the P in PASS stand for, when using fire extinguishers?
pull the pin
Why do we use the scientific method?
To test a hypothesis or question
If an atom loses an electron what will the charge be? (negative, positive or neutral).
the charge will be positive
A ____________ is a substance made of atoms of two or more different elements that are chemically combined
compound
True or False: A mixture a pure substance?
False