The core of an atom is called this.
The nucleus
the terms for the beginning and ending materials in chemical reaction.
reactant and product
To find velocity what two things do you need to know?
Speed and Direction
These waves travel perpendicular to the direction of the wave, creating crests and troughs.
Transverse Waves
How compact an object is, equal to mass/volume.
Density
These are the two particles located in the nucleus of an atom.
proton and neutron
Balance the following equation
___ N2+ ____ H2 → ____ NH3
N2 + 3H2 → 2NH3
This is the metric unit used to measure force.
Newton
These are the lowest frequency waves on the electromagnetic spectrum.
Radio
This variable stays the same in an experiment
Controlled
This is the outer shell of an atom that determines if it will bond or not with other atoms.
Valence Shell
Heilium
What is newton's second law of motion?
F = M x A
What does the law of reflection state.
Incoming light reflects at same angle as reflected light
Mendeleev
This is an odorous yellow brittle non metal located in group 16 of the periodic table.
What is sulfur.
What are 4 evidences that might show a chemical reaction has occured
change in temperature
precipitate forms
gas production
odor produced
According to the laws of universal gravitation what two factors affect the force of gravity bewtween two objects?
Their masses and the distance between them.
What type of lens corrects vision for someone who is nearsighted?
Concave. - spreads out light to reach the retina
The first Earth Day was celebrated in this year... A: 1950 B: 1960 C: 1970 D: 1980
1970
These two atoms make up table salt.
Na Cl
When the number of atoms are equal on both sides of the equation, this law has been fulfilled.
Law of Conservation of Mass / Matter
Explain the action and reaction forces acting on a book resting on a table
book pushes on table table pushes back equal and opposite
Why does light have a "dual nature?"
it can behave as waves or particles
What is the chemical formula for photosynthesis?
6CO2 + 6H2O → C6H12O6 + 6O2