Scientific Processes
How many significant figures are in the number 0.020
What is 2?
The inner part of an atom that contains the proton and the neutron is called the __________.
Nucleus
When two or more reactants combine, it is called a _____ reaction.
What is a synthesis/addition reaction?
This is anything that takes up space (has a mass).
What is matter?
This lab equipment must be worn at all times when in the lab?
What are safety goggles?
1.6 x 10 -3 in standard notation is . . .
What is 0.0016?
These particles have a positive charge and are found inside the nucleus.
proton
The right side of the chemical equation is known as the ____ ?
What are Products?
The purest form of matter is called __________.
what are elements/atoms?
This lab tool is used for heating or transferring liquids and has a narrow neck.
What is an Erlenmeyer flask?
What is the internationally recognized decimal system of measurement ?
What is the metric system?
Isotopes are molecules that have a different atomic mass because they have a different number of ____ ?
What are Neutrons?
Balance the following equation:
__ (NH4)2SO4 --> __ NH3 + __H2SO4
What is 1:2:1?
If matter can be separated physically, what is it called?
What is a mixture?
What type of gas is used to fuel the bunsen burner?
What is methane?
560 cm = ________ Hm
What is 0.0560 ?
This scientist is credited with the discovery of the negative charged particles surround the nucleus of the atom.
Who is J.J Thomson ?
What do you call an ion that has a negative charge?
What is an anion?
A chemist is studying a sample does not separate physically, but when electricity is run through it, it decomposes. What category of matter it is?
What is a compound?
What does the abbreviation PPE stand for?
What are personal protective equipment?
Sum up the following, following significant figures: 10 + 0.95 + 1.0 = ____ ?
What is 12 ?
How does one calculate the number of neutrons found in an atom?
What is Atomic Mass - Atomic Number(Protons) = # of Neutrons ?
When a hydrocarbon combines with oxygen, what type of reaction will occur?
What is a combustion reaction?
This form of separation takes place when one separates a homogeneous liquid solution.
What is distillation?
This lab tool is used to grind solid chemicals.
What is a mortar and pestle?