What is a pure substance made of two or more elements that are chemically combined
compound
100
1) A force is a ________ or ________
2) force is measured in what?
1) push or a pull
2) Newtons (N)
100
What are newton's 3 laws of motion?
1)object in motion will stay in motion and vice-versa
2) F=ma
3) for every action, there is an equal and opposite reaction
100
The amount of momentum which an object has is dependent upon two variables: ________ & __________.
Mass and velocity
100
Liters (L) and milliliters (mL) are the units used most often to express ___________.
Volume
200
What is a substance that cannot be separated or broken down into simpler substances by chemical means.
element
200
What is a force that opposes motion between two surfaces that are in contact?
friction
200
1) what is projectile motion?
2) projectile motion is made up of two components which include ___________________ & _________________
1) path an object takes when it is propelled.
2) Horizontal and vertical
200
Anytime objects collide, the total amount of momentum stays the same is known as the __________
Law of conservation of momentum
200
The curve at the surface of a liquid is called a___________
Meniscus
300
What is a mixture in which particles of a material are evenly dispersed throughout a liquid or gas. These particles are usually very large.
Suspension
300
what is a force of attraction between two objects that is due to their masses.
gravity
300
What is terminal velocity?
When an object stops accelerating and has a constant velocity
300
1) a _________ ___________ objects bounce off of each other in a collision
2) In a __________ ___________objects stick together after the collision
1) elastic collision
2) inelastic collision
300
The units for Mass are ____,_____,______
grams, milligrams, kilograms
400
1) What is a mixture where the components that make up the mixture are uniformly distributed throughout the mixture?
2)What is a mixture where the components of the mixture are not uniform and one can distinguish substances easily in the mixture.
1)Homogenous mixture
2)Heterogeneous mixture
400
What are balanced and unbalanced forces?
Balanced is when the object is not moving and the net force is 0.
Unbalanced is when the object is in motion and the net for is greater than 0.
400
What is the Law of Universal Gravitation?
Mass and distance. The greater the mass, and closer the distance, between 2 objects, the greater the gravitational force. Vice-versa is true as well.
400
What is referred to as mass in motion?
momentum
400
1) What is a measure of the gravitational force exerted on an object?
2) Weight is expressed in _______ (SI unit)
1)Weight
2) Newtons
500
1) In a solution, the substance in which the dissolves in the solvent is the_______________.
2) ____________ is the substance in which the solute dissolves. This is the bigger substance in a solution.
1)Solute
2) Solvent
500
1) ___________ friction between moving surfaces
2) ________ __________ is when force is applied to an object but does not cause the object to move.
1) Kinetic friction
2) Static friction
500
1)What is free fall?
2)What 2 places have no air resistance?
1) When only the force of gravity is acting on an object.
2) In a vacuum and in space
500
1) Which one of Newton's Law is also referred to as inertia?
2) Which of Newton's laws explains momentum?
1) 1st law
2) 3rd law
500
1)What is the tendency of an object to resist a change in motion
2) What is the measure of the answer from #1?