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;
9 Cards in this Set
- Front
- Back
|
What is matter?
|
Anything that has mass.
|
|
|
Eighty years ago, what did scientists think was the smallest piece of matter?
|
the atom
|
|
|
At that time this atom was thought to be the "building block of" what exactly?
|
matter.
|
|
|
Rutherford discovered that atoms are really made of a negatively charged center called the nucleus, orbited by negatively charged particles called protons. Correct?
|
No. positvely charged nucleus orbite by electrons.
|
|
|
In 1932, scientists discovered that the nucleus of an atom is made of what?
|
Protons and neutrons
|
|
|
Gases or brittle solids at room temperature are generally what type of conductor of heat and electricy.
|
Poor conductors
|
|
|
The section on the perioic table composed of eight groups, including metals, metalloids, and non-metals.
|
Period
|
|
|
Tell me, what are the representative elements.
|
Row of elements in the periodic table whose properties change gradually and predictably.
|
|
|
Element that has luster, is a good conductor of heat and electricity, and is usually a solid at room temperature:
|
Metal.
|
