Substances, elements, & compounds
What is an element?
substance consisting of atoms that include a unique number of protons
what is a chemical bond?
a force that holds atoms together
Can matter be destroyed?
No it only goes through altering chemical and physical changes
What is the definition of a chemical property?
describes a substance's ability to undergo changes that transform it into different substances
What is the periodic table?
A chart that organizes the chemical elements
What is a substance?
Material made up of both elements and compound
What is volume?
The amount of space a substance takes up usually measured in mL
What is phase change?
The process which one state of matter changes into another new state
What is a molecule?
a combination of two or multiple atoms
What is The Atomic Mass?
The sum of the amount of Protons plus Neutrons in the Nucleus.
What is distillation?
A technique of separation which is based on the differences in the boiling point in the substances involved
When two substances are homogeneous what does that mean?
They appear to be equivalent throughout
What is condensing?
The process where a gas changes into a liquid
What are examples of chemical properties?
flammability, toxicity, heat of combustion, and reactivity
How can you define bond length?
The distance of attraction between two nuclei
What is the atomic number?
the number of protons in the nucleus
What is Organic Chemistry?
dealing with the elements containing carbon, basically all living things
What is a chemical change?
A change that produces a new substance
a characteristic of matter that may be observed and measured without altering the chemical identity of the substance
What is biochemistry
The study of the chemical processes in Living Organisms.
What is Density?
The measure of how much mass is contained per given unit volume
What is a Homogeneous Mixture?
A substance that contains regions that contain different properties from those of other regions.
What is a physical change?
a change where a new substance is not formed
What are the types of physical properties
The properties such as color, hardness, malleability, solubility, electrical conductivity, density, melting point, and boiling point.
What are the Alkaline Earth Metals?
Magnesium, Beryllium, Strontium, Calcium, Barium, Radium.