Chemical Math
Atoms/Element/Isotope
Periodic Table
pH
Matter
100
Why do we use uncertain digits?
Human error or instrument error in measurement
100
What is an ion?
Charged atom with an usual number of electrons
100
Of what is the table mostly made up ?
Metals
100
What is the pH range of an acid?
0-6
100
What is matter?
Anything that has mass and volume
200
How many sig figs in this number? .000547080
6
200
Where would you find a reference for all the elements in the universe?
Periodic table
200
By what number is the periodic table organized?
By the atomic number or number of protons
200
What is the pH range of a base?
8-14
200
What are the two main groups of matter?
Pure Substances and Mixtures
300
Change this number to scientific notation. .96430
9.6430 x 10-1
300
What is a diagnostic radiopharmaceutical?
A radioactive isotope such as I-131 which diagnoses thyroid disease.
300
How are molecules of nonmetals such as H2O bonded?
Covalent bonding or sharing of electrons
300
What is the pH of salts and water?
7 or neutral
300
What is the difference between the two types of Pure Substances?
Elements- have only one type of atom Compounds-have more than one type of atom chemically bonded
400
Why are scientific notation and sig. figs. used?
To clean up the numbers, especially in very large or small measurements.
400
What is a therapeutic radiopharmaceutical?
It's a radioactive isotope that treats disease such as Co-60 which treats cancer
400
How are electrolytes or salts such as NaCl bonded?
Ionic bonding or transfer of electrons
400
How do you make an acidic solution basic?
Add a base
400
How do solutions and suspensions differ?
Solutions are well mixed Suspensions settle out on standing
500
Why are SI units used?
For a universal scientific math language
500
What are two ways that radioisotopes are made?
In a nuclear reactor or a cyclotron.
500
What family on the Periodic Table does not react due to the presence of 8 electrons in the outer shell?
Group 8 A or the Noble Gases
500
What elements often appear in the names of an acid or base?
Acid: H at the beginning Base: OH at the end
500
What are 3 examples of types of mixtures as seen in the nut and bolt lab?
A mixture of elements A mixture of compounds and elements A mixture of compounds
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