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;
13 Cards in this Set
- Front
- Back
|
___ is the branch of science that studies the composition, structure and properties of matter.
|
Chemistry
|
|
|
A __ consists of two more substances that retain their chemical and physical properties when mixed together.
|
mixture
|
|
|
Give an example of a mixture:
|
Salt and pepper
|
|
|
Compare mixtures and compounds:
1. 1. 2. 2. 3. 3. 4. 4. |
must use book to learn these:
p. 142 |
|
|
A ____ will form a new substance.
|
compound
|
|
|
A ____ has different chemical and physical properties from the elements that made it.
|
compound
|
|
|
Give an example of a compound:
|
hydrogen + oxygen = water
|
|
|
Atoms tend to combine in order to achieve ____.
|
stability
|
|
|
The electrons in an atom's last unfilled electron shell are called __ ___.
|
valence electrons
|
|
|
An ___ is an electrically charged atom that results from the loss or gain of electrons.
|
ion
|
|
|
If an atom loses an electron, it will become ___ charged.
|
positive
|
|
|
If an atom gains an electron, it will become ___ charged.
|
negative
|
|
|
An __ __ is a chemical bond in which electrons are completely transferred from one atom to another.
|
ionic bond
|
