Atoms-6th Grade Flashcards
Proton
Positive charge
Neutron
No charge
Electron
Negative charge
Nucleus
Contains protons and neutrons
Molecules-made of _________type or ______________types of atoms
Single….different
Compound-made of ______or more __________________types of atoms
Two……different
Hydrogen(H2) is a/an ___________
Nitrogen(N2) is a/an___________
Water(H2O) is a/an ______________
Salt(NaCL) is a/an________________
Hydrogen is an element
Nitrogen is an element
Water is a compound
Salt is a compound
Mixtures are__________not____________. Mixtures can be ______________
Mixtures are physical not chemical. Mixtures can be separated.
Homogeneous..tell me e descriptions
Evenly mixed
Uniform(I don’t know what this means)
Solutions
Heterogeneous…tell me the descriptions
Chunky
Suspensions
Colloids
Not evenly mixed
Give me two examples of the following:
Solution:__________,_____________
Suspension:____________,____________
Colloid:_________________,________________
Solution: air, and saltwater
Suspension: muddy water, and Italian Dressing
Colloid: mayo, and milk
Name three properties of physical properties
Shape, color, mass
Name three properties of chemical property
Flammability, toxicity, reactivity
Why are particles always moving?
They have energy
The more energy they have, the __________they move.
Faster
As temperature increases, the speed of the particles __________
Increases
On a hot day, _____ energy, move faster, break bonds, ________ dense.
More, less
Cold day, less energy, move slower, get _________, more ________
Closer, dense
__________temperature=__________pressure. Hot day= full ballon Cold day= deflated balloon
Increasing , increasing
When calculating the density, what is the formula
D=M/V
Any change in which the physical properties of a substances change but the identity of he substance does not change.
Physical Change
A change in which one or more substances change into entirely new substances with different properties
Chemical change
Particles stay in rigid structures that does not change shape or size
Solid
State with definite volume but no definite shape
Liquid
