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;
46 Cards in this Set
- Front
- Back
|
Atom
|
The tiniest whoe part of matter.
|
|
|
Matter
|
Anything that takes up space and has mass.
|
|
|
Mass
|
The total amount of atoms that make up matter.
|
|
|
Neutron
|
A particle, that is in an atoms nucleus that has no electric charge.
|
|
|
Proton
|
A particle, that is in an atoms nucleus that has a positive electric charge.
|
|
|
Electron
|
A particle that orbits an atom's nucleus that has a negative electrical charge.
|
|
|
Electron cloud model
|
The best idea of what scientists have of what an atom looks like.
|
|
|
Element
|
Matter made up of only one kind of atom.
|
|
|
Atomic Number
|
The number of protons in an atom's nucleus.
|
|
|
Molecule
|
More than one atom joined together by chemical bonds.
|
|
|
Periodic Table of the Elements
|
A chart used to classify atoms.
|
|
|
volume
|
The amount of space matter takes up.
|
|
|
Weight
|
the pull of gravity on matter.
|
|
|
How can you demonstrate that carbon dioxide is matter?
|
Blow up the baloon to prove CO2 takes up space and weigh it to prove it has mass.
|
|
|
Is light from a fire matter? How do you know?
|
No, light does not take space, or have mass, it is energy.
|
|
|
List five things in the classroom that are matter.
|
desk, person, chalkboard, tv, windows (answers may vary)
|
|
|
List and describe the four states of matter.
|
Solid-definite shape definie volume
Liquid-indefinite shape definie volume Gas-indefinite shape indefinite volume plasma-indefinite shape indefinite volume electrically charged. |
|
|
Why haven't scientists been able to study atoms directly?
|
Because atoms are too small to see.
|
|
|
What are the three basic parts of an atom?
|
Neutron, Proton, Electron
|
|
|
What electrical charges do the three basic parts of atom have?
|
Neutron=No electrical charge, Proton=Positive, Electron=negative
|
|
|
In which part of the atom is most of its mass found?
|
In its nucleus.
|
|
|
Waht part of the atom takes up most of its space?
|
The electron cloud.
|
|
|
How are all atoms of the same kind of matter similar?
|
The have the same number of protons.
|
|
|
Why are atoms said to be electrically neutral?
|
They have an equal ammount of positive and negative charges.
|
|
|
Which atom has the atomic number 2?
|
Helium
|
|
|
Which atom has the atomic number 20?
|
Calcium
|
|
|
Why have scientists chaged their ideas on the model of the atom?
|
They have made new discoveries that have changed their ideas.
|
|
|
What is a quark?
|
A small particle that neutrons and protons are made of (it takes 3 quarks to make a neutron or proton).
|
|
|
According to the electron cloud model, where are the electrons found?
|
Orbiting the atom's nucleus.
|
|
|
How do oxygen atoms compare to hydrogen atoms?
|
Oxygen atoms have more mass because they have more protons.
|
|
|
How many types of elements are believed to exist?
|
118
|
|
|
Why do scientists need to classify elements?
|
Scientists classify elements to make them easier to study.
|
|
|
Why did Mendeleyev leave spaces in his chart?
|
He knew there were more atoms to be discovered to fill in those spaces.
|
|
|
Name three people or places for which elements are named.
|
Nobelium, Americium, Califonium
|
|
|
Why are elements named after people or places?
|
Elements are named for places they are discovered or in honor of famous scientists.
|
|
|
How is a compound formed?
|
When a chemical reaction occurs, atoms are joined in a new way by chemical bonds.
|
|
|
How does a compound differ from an element?
|
A compound has more than one different type of atom, and element just has one type of atom.
|
|
|
What happens to the properties of atoms when they are joined through a chemical reaction to form a compound?
|
The properties of atoms change.
|
|
|
What can element molecule be broken into?
|
An element molecule can be broken down into a single atom of the same kind.
|
|
|
What can a compound be broken into?
|
A compound can be broken into individual compound molecules.
|
|
|
What does a subscript in a formula mean?
|
A subscript is the number of the type of atom it follows in the formula.
|
|
|
What does it mean when a symbol is not followed by a subscript?
|
There's only one of that atom.
|
|
|
If salt is NaCl, what atoms does the compound contain?
|
Sodium and Chlorine
|
|
|
What is the formula for a compund containing one atom of sodium, one atom of oxygen, and one atom of hydorgen?
|
NaOH
|
|
|
Is water a compund? How do you know?
|
Yes, because it has two kinds of atoms.
|
|
|
How many electrons do each of the following kinds of matter have in each atom?
silver...47 protons carbon...6 protons sodium...11 protons neon...10 protons iodine...53 protons |
silver...47 electrons
carbon...6 electrons sodium...11 electrons neon...10 electrons iodine...53 electrons |
