Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
37 Cards in this Set
- Front
- Back
|
atom
|
the smallest particle of an element that still has the properties of that element. It is a tiny building block of matter, made up of even tinnier particles. It consists of a nucleus, protons, neutrons and electrons.
|
|
|
chemical symbol
|
an abbreviation of an element's name.
|
|
|
compound
|
a pure substance that is made of two or more elements chemically combined
|
|
|
electron
|
Negatively charged particles moving around the space outside of the nucleus of an atom. The mass of an electron is very small (1/2,000 the mass of a proton or neutron).
|
|
|
metal
|
a substance found on the periodic table, usually shiny, can be bent or stretched and conduct electricity. Most elements are metals
|
|
|
molecule
|
a group of two or more atoms that are chemically joind and that act as a single unit.
|
|
|
neutron
|
A neutron is one of the kinds of particles found inside of the nucleus of an atom. It is a particle that lacks charge. (it has the same mass as a proton).
|
|
|
noble gas
|
nonmetal elements that hardly ever combine with other elements to form compounts (e.g. helium). They will glow if an electric current is passed trough them (like in neon lights). Different mixtures of gases glow in different colors.
|
|
|
nonmetal
|
Many nonmetals are gasses. Solid nonmetals are usually dull in color, do not conduct electricity, do not bend or stretch very much and break easily. many are gases
|
|
|
nucleus
|
atoms consist of a nucleus, surrounded by moving electrons The nucleus is the structure in the center of an atom. It contains two kinds of particles: protons and neutrons.
|
|
|
History of the periodic table
|
In 1869, Dmitiri Mendeleyev, a russian chemist, developed a way to arrange and classify the elements. Elements are listed in order of their properties. The periodic table has undergone revisions since Mendeleyev first created it with spaces left blank for elements that he though might be discovered).
|
|
|
proton
|
a small positively charged particle
|
|
|
semimetal
|
Semimetals are like metals in some ways and like non metals in other ways. AKA meteloiids, semiconductors, some are beyond shiny.
|
|
|
Pure elements
|
Al, Fe, Ni, Cu, Ag, Au
|
|
|
How is a molecule formed?
|
answer
|
|
|
What is matter made of?
|
answer
|
|
|
What are some of the common properties of metals?
|
answer
|
|
|
Element
|
a substance that cannot be broken apart chemically into other substances. Elements are made up of only one kind of atom.
|
|
|
Why is the periodic table a useful tool? What info does it provide? What does it not provide?
|
answer
|
|
|
Periodic table
|
A way of classifying and arranging the elements, according to their properties. It is standardized (formatted the same so that scientists all over the world can use the same thing). There is a box for each element; the box lists the atomic number, the chemical symbol and its name. Elements are arranged according to groups (similar properties within each group). They are also listed in order of increasing atomic number.
|
|
|
atomic number
|
the number of protons in an element's nuclei
|
|
|
An uncharged particle is called a...
|
neutron
|
|
|
In the periodic table, elements are arranged according to...
|
atomic number
|
|
|
A negatively charged particle is called an...
|
electron
|
|
|
What kind of element is usually dull in color, does not conduct electricity and doesn't bend or stretch much and breaks easily?
|
nonmetal
|
|
|
Draw an atom: Oxygen has an atomic number of 8. How many neutrons? Where are the protons, electrons and neutrons found?
|
refer to anatomic model.
|
|
|
matter
|
Matter is everything around you. Matter is anything made of atoms and molecules . Matter is anything that has mass and takes up space
|
|
|
group
|
mike give definition
|
|
|
period
|
mike give definition
|
|
|
proteins
|
help build muscle and body tissue; help control chemical reactions; meat, fish, soy, eggs.
|
|
|
lipids
|
lipids make up fat tissue and help the body store energy. The are found in butter oil cheese and nuts and have lots of lipids.
|
|
|
nucleic acids
|
form long polymers that help living things grow and develop. DNA is an example of a poLymer of nucleic acid. DNA determines the trait of every living thing.
|
|
|
carbohydrates
|
provides the body with energy, most plant tissue is made of carbohydrates, you take in a lot of carbs when you eat wheat products
|
|
|
describe how humans use: carbohydrates
lipids proteins nulceic acids |
carbohydrates: energy
lipids: store energy proteins: build muscle & body tissue nulceic acids: growth & development (role in DNA) |
|
|
From what types of foods can you get: carbohydrates
lipids proteins nulceic acids |
carbohydrates: grains & sugar
lipids: dairy nuts oils proteins: meat bean fish eggs nulceic acids:? |
|
|
Describe the structure of the periodic table
|
Michael state the answer
|
|
|
carbon compound
|
carbon compounds - carbon forms more compounds than all but one other element (hydrogen). 10 million known carbon compounds. they are in plastics, fuels and are also the main parts of all living things (4 main groups).
|
