Matter Classification
What is a pure substance made of only one type of atom?
What is an element?
This property allows water molecules to stick to each other.
What is cohesion?
On the pH scale, a pH of 7 represents this.
What is neutral?
A cloud of gas and dust where stars begin to form is called this.
What is a nebula?
Newton's First Law is also called this.
What is the Law of Inertia?
Salt water is an example of this type of mixture where the parts are uniformly distributed.
What is a homogeneous mixture?
Water climbing up the side of a beaker is an example of this property.
What is adhesion?
Lemon juice has a pH of 2. Is it an acid or a base?
What is an acid?
This property of a star determines how long it will live.
What is mass?
This equation represents Newton's Second Law.
What is F = ma (Force = mass × acceleration)?
Two or more elements chemically bonded together form this.
What is a compound?
This phenomenon, caused by cohesion, allows water striders to walk on water.
What is surface tension?
Red litmus paper turns this color when dipped in a base.
What is blue?
The H-R Diagram compares a star's temperature and this.
What is brightness (or luminosity)?
A 5 kg object is pushed with 50 N of force. Calculate its acceleration.
Trail mix is an example of this type of mixture where you can see the different parts.
What is a heterogeneous mixture?
What substance is known as the "universal solvent"?
What is water.
A substance with a pH of 11 is a strong base. What are 2 characteristics of a base?
What is: Slippery, Bitter
Our Sun is this type of star on the H-R Diagram.
What is a main sequence star?
When you jump off a diving board, you push down on the board and the board pushes up on you. This is an example of this law.
What is Newton's Third Law?
Explain the difference between a compound and a mixture in terms of how the substances are combined.
What is: In a compound, elements are chemically bonded; in a mixture, substances are physically combined and can be separated?
Describe how both cohesion and adhesion work together to transport water from a plant's roots to its leaves.
What is: Cohesion holds water molecules together in a chain, while adhesion pulls the chain up through the plant?
Rank these from most acidic to most basic: pH 12, pH 2, pH 7.
What is: pH 2 (most acidic), pH 7 (neutral), pH 12 (most basic)?
Explain why a star with more mass will have a shorter lifespan than a star with less mass.
What is: More massive stars burn their fuel faster, so they run out of fuel sooner?
Explain why a heavier object requires more force to accelerate at the same rate as a lighter object, using Newton's Second Law.
What is: Because F = ma, if mass increases and acceleration stays the same, force must increase?