Terms and Definitions
The smallest chemical unit of matter.
What is an atom?
If a scientist adds heat to a liquid material so that it becomes gas, what do call the temperature at which this happens?
What is the boiling point?
Atoms are made up of these three basic particles.
What are neutrons, protons, and electrons?
The three basic properties of acids are:
What are the three basic properties of acids? They are:
1. They taste sour.
2. They can conduct electricity when added to water.
3.They donate hydrogen ions.
Matter is able to ____________. Chemists classify the changes that matter undergoes into two categories:
_______________________ and ____________________________
What are change, physical change and chemical change?
Anything that has mass and takes up space.
What is matter?
Matter exists in these three basic states.
What are solids, liquids, and gases?
Atoms of the same element behave in a ______________way.
similar?
The three major properties of bases are
1.
2.
3.
What are the three major properties of bases? They are:
1. They taste chalky and bitter.
2. They feel slippery to the touch when they are dissolved in water.
3.They receive hydrogen ions.
Shredding a piece of paper into small pieces is an example of ___________ _______________.
What is physical change?
A change in which the atoms or molecules in substance stay the same.
What is a physical change?
In the early 1950s, this fourth state of matter was added to the basic states of matter.
What is plasma?
The atomic number is the number of ___________ the element's atom possesses.
What are protons?
Bleach is an example of a ________ on the pH scale.
What is a base?
Cooking an egg is an example of ________________ ___________________.
What is chemical change?
Two or more atoms linked together to make a subtance with unique properties.
What is a molecule?
The temperature a liquid becomes a solid is called its ________________________.
What is a freezing point?
In an ionic bond in a sodium chloride molecule, chlorine takes the ____________from sodium, resulting in 8 total ____________in its third energy level.
What is/are electron(s)?
Lemon juice is an example of an ____________ on the pH scale.
What is an acid?
Mixing a glass of lemonade is an example of _________________________ ______________.
What is physical change?
A substance that contains different compounds and/or elements.
What is a mixture?
Humans are made up of these states of matter.
What are solids, liquids, and gases.
This atom makes up almost 74% of the atoms in our Milky Way Galaxy.
What are hydrogen atoms?
pH means _______________ for _______________
What are potential and hydrogen?
Brewing coffee is an example of a ________________ _____________________.
What is a physical change?
Roasting coffee beans is an example of chemical change. Grinding coffee beans is an example of physical change.