Physical Science Scientific Concepts Flashcards
1
Q
Clues to identify Physical Changes
A
- Change is shape
- Change in size
- Change in state
- Dissolving
- Dilution
- Tearing, Bending, Breaking
- Usually easily reversible
- No new substances formed
2
Q
Clues to identify chemical Changes
A
- Change in color
- Change in smell
- Bubbling and Fizzing
- Absorbs or gives off heat
- Produces light or smoke
- Not easily reversible
- At least one new substance is formed
3
Q
States of Matter
A
The distinct forms in which matter can exist in: solid, liquid, and gas
4
Q
Phase Changes
A
When matter changes from one sate to another
5
Q
Balancing Chemical Equations
A
Writing an equation representing a chemical reaction so there is the same amount of atoms for each element in the reactant and the product
6
Q
Density
A
The degree of compactness of a substance
7
Q
Properties of Water
A
- Surface tension
- Cohesion
- Adhesion
- Solubility
- Density
- Boiling
- Freezing and melting point
- States of matter
8
Q
Properties of Gases
A
- no define volume
- no define shape
- take shape of their container
- Particles are far apart
- Partials move freely except for when they bump into each other.
9
Q
Law Conservation of Matter
A
The mass is a a substance can not be created or destroyed but rearranged to create new substances
