The Number of different types of atoms are found in one molecule of oxygen (O (subscript 2))
What is one atom?
100
A substance that is made up of one kind of atom
What is an element?
100
Which of the following substances is acidic?
a. antacid
b. lemon juice
c. ammonia
d. soap
What is lemon juice?
100
Matter is made out of this
What is atoms?
200
positive charged particle
What is proton?
200
Chemical formula for carbon dioxide
What is CO(subscript 2)?
200
Scientists have discovered just over this many different elements with unique properties
What is over 100?
200
Given that sodium hydroxide is a strong base, which of the following is most likely its pH?
a. 13.5
b. 2.3
c. 7.0
d. 8.0
What is 13.5?
200
Smallest particle of an element that still retains properties of that element
What is atom?
300
neutral subatomic particle
What is neutron?
300
a chemical change occurs when a substance changes:
a. composition
b. size
c. state
d. color
What is composition?
300
the number of protons in the nucleus is also called this
What is the atomic number?
300
A red piece of litmus paper will turn blue when dipped in what?
What is base?
300
a mixture composed of two or more substances that are evenly spread out and mixed together
What is homogenous?
400
part of an atom that would be found outside the nucleus
What is electron?
400
when 2 different substances bond together to form new molecules
What is a compound?
400
All compounds are made of 2 or more of these
What is an element?
400
Place the following substances in order from lowest pH to highest pH: bases, acids, neutral compounds.
What are acids, neutral compounds, and bases?
400
this can dissolve a substance
What is solvent?
500
this part of an atom contains the protons and neutrons
What is a nucleus?
500
how many molecules form 3H2O?
What is three?
500
the total number of protons and neutrons
What is mass number?
500
If universal indicator is added to a solution, and the solution turns red, the solution must be
a. strongly basic
b. slightly acidic
C. slightly basic
d. strongly acidic
What is strongly acidic?
500
when substances are not evenly distributed when mixed together and can be filtered