Sig Figs and Scientific Notation
Matter
Atoms
Atomic Numbers
Random
100
0.0020 has this many sig figs
What is 2?
100
The two requirements for something to be considered matter.
What are mass and volume?
100
The three subatomic particles
What are protons, neutrons, electrons
100
The atomic number of an atom is equal to this
What is number of protons?
100
The density of a metal that has a mass of 5 g and a volume of 1 mL.
What is 5 g/mL
200
This is the unit of atomic mass.
What is atomic mass unit (amu)
200
Tap water is this kind of mixture
What is homogeneous?
200
This is the reason that the atomic masses listed on the periodic table are not whole numbers
What is they are weighted averages of all the known isotopes of that element?
200
Isotopes of an atom have the same number of protons but different number of these.
What are neutrons?
200
True or false: Air is an element
What is false?
300
2200000 in scientific notation.
What is 2.2 x 10^7
300
The 3 phases of matter
What are solids, liquids and gases?
300
the subatomic particles found in the nucleus
What are protons & neutrons?
300
This element has 38 protons.
What is strontium?
300
A substance freezes. The motion of the particles in the substance does this.
What is slows down and condense?
400
There are this many mL in 3 L of milk. (1000 mL = 1 L)
What is 3000 mL
400
Something that a definite shape and definite volume is in this state of matter
What is a solid?
400
The majority of the atom is this.
What is empty space?
400
This element has 4 energy levels and 4 valence electrons
What is silicon?
400
The four signs of a chemical change
What are 1. color change, 2. heat, 3. production of gas, 4. production of a precipitate
500
3 x 4 is equal to this number (sig fig your answer)
What is 10?
500
True or False: Dissolving salt in water is an example of a chemical change
What is false?
500
Bohr added this idea to the atomic model
What is that electrons exist in set orbitals depending on their energy level. Electrons can absorb or emit energy to move levels?
500
Oxygen-17 has this many neutrons.
What is 9?
500
The charge of a lithium atom that has 3 protons and 2 electrons.
What is +1
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