What is an example of one of the Newton's laws of motions?
A peice of wood will not fall off of the table unless a unbalanced force acts upon it.
100
What is an example of a physical and chemical change.
An example of a physical change is leaving a cup of water in the freezer to freeze into ice. An example of a chemical change is leaving your bike out in the rain and it starts to rust.
100
What determines whether an object will sink or float in a fluid?
Density
100
Explain the particles of liquid water.
The particles of liquid water move less freely than water vapor but more freely than solid ice.
100
What is the difference between a period and a group or family in the Periodic Table of the Elements?
A period is the row of elements on the Periodic Table. A group or family is a column of elements on the Periodic Table.
200
What is the second law of motion
Acceleration depends on the object's mass and the net force acting upon it.
200
How do you tell the difference between physical and chemical changes.
A pysical change is when only the form or shape changes. A chemical change is when the chemical makeup and properties change.
200
If you have a cup of water and a piece of wood is floating on top of the water, and a rock is at the bottom of the cup, which is denser?
The rock is denser.
200
Explain each shape and volume of the states of matter.
Solid has a definite shape and volume. Liquid has no definite shape but has a definite volume. Gas has no definite shape or volume.
200
How do you measure the volume of an irregular solid?
First you record the initial water level of the graduated cylinder, then put the irregular shaped object into the graduated cylinder, then record the water level and subtract the final from the initial to determine your volume.
300
What is a newton?
Unit of force.
300
Does a endothermic reaction occur in a physical change.
No, it occurs in chemical changes.
300
What is the formula for density?
Density equals mass divided by volume.
300
What is happening when matter is transforming from solid ice to water vapor?
deposition
300
On a distance-time graph, which measurement belongs on the x and y axis?
Time belongs on the x-axis and distance goes on the y-axis.
400
How many forms of energy are there? Name them all.
There are six forms of energy, mechanical energy, thermal energy, nuclear energy, chemical energy, electricmagnetic energy, and eletrical energy.
400
What is a endothermic reaction?
An endothermic reaction is when energy gets absorbed and it feels cold
400
What is the difference between mass and weight?
Mass is the amoiunt of matter in an object. Weight is the measure of the pull of gravity pulling on the substance.
400
What are the six parts matter can turn into?
Mixtures, pure substances, elements, compounds, and molecules.
400
How do you determine significant digits?
If there is no decimal point, the zeroes on the right are significant. If there is a decimal pint, then the zeroes to the left are significant.
500
What is the conservation of energy?
Energy cannot be created or destroyed.
500
What is a exothermic reaction?
An exothermic reaction is when energy is released and it feels hot.
500
Do both weight and mass change depending on location?
No, only weight changes depending on location. Mass always stays the same.
500
What is the definition of matter?
Anything that has mass and takes up space is considered matter.
500
Explain the Law of Conservation of Mass.
The Law of Conservation of Mass states that during a chemical reaction, the mass of the reactants always equals the mass of the products. No matter is created or destroyed.