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;
25 Cards in this Set
- Front
- Back
|
What are the particles of an atom that have a positive charge?
|
protons
|
|
|
What is the densest part of an atom? (It is surrounded by an electron cloud!)
|
nucleus
|
|
|
what is an atomic number?
|
the number of protons in the nucleus
|
|
|
What is an isotope?
|
atoms of the same element that have different number of protons
|
|
|
What are particles that have a negative charge?
|
Electrons
|
|
|
What is the smallest particle that an atom can be divided into?
|
atoms
|
|
|
Matter is anything that has _______ & _______ .
|
mass & volume
|
|
|
__________ is the amount of space something takes up.
|
volume
|
|
|
Mass is measured with a __________ and expressed in _________ .
|
balance and units of kg, g, or mg
|
|
|
A unit of force is a _____ .
|
Newton (N)
|
|
|
A physical property can be observed without changing ________________ .
|
the identity of the matter
|
|
|
The ability to transfer thermal or electrical energy is called ____________ .
|
conductivity
|
|
|
If you can make a wire out of a metal, the metal would very _________ .
|
ductile
|
|
|
If you can pound a metal into thin sheets, like aluminum foil, it would have _________ .
|
malleability
|
|
|
The ability to float in water is called ______________ .
|
Buoyancy
|
|
|
Sugar is able to dissolve easily so it is ___________ .
|
soluble
|
|
|
Name 3 metals that are good conductors.
|
silver, gold, copper, or steel
|
|
|
An ____________ is a pure substance that cannot be separated into simpler substances.
|
element
|
|
|
Horizontal rows on the periodic table are called ______________ .
|
periods
|
|
|
Vertical columns are called _________ or _________ .
|
groups or families
|
|
|
Elements are classified as metals, nonmetals, or ______________ .
|
metalloids
|
|
|
What is the largest category of elements?
|
metals
|
|
|
_____________ are often gases at room temperature.
|
Nonmetals
|
|
|
Metalloids (semiconductors) have properties of _______ & _________ .
|
metals and nonmetals
|
|
|
Volume of a solid is expressed in _______ .
|
cm cubed
|
