Conservation of mass and chemical and physical changes.
Density, Mass and Weight
Properties, classification of matter, Periodic Table of Elements, and Measurement.
100
If heat is not temperature what is it?
Heat is the average movement of the particles in an object.
100
What goes on the x axis and what goes on the y axis?
What is time is on the x axis and distance is on the y axis.
100
Define chemical formula.
What is a combination of symbols that represent the type(s) of atoms in a molecule.
100
Define density.
Density is a measure of how compact the substances molecules are.
100
Name five groups matter is classified in.
What is Mixtures, Pure substances, Elements, Compounds and Molecules.
200
What are the two basic types of energy?
What is Potential energy and Kinetic energy.
200
What does slope represent? What does it look like on a graph?
What is speed. The slope is the line on the graph connecting the points.
200
Define chemical equation.
A chemical equation uses chemical formulas and other symbols instead of words to summarize a chemical reaction.
200
What is the formula for density?
What is D=Mass/Volume.
200
What do scientists look for when classifying matter?
What is chemical properties and physical properties.
300
Name five more complex types of energy.
What is Mechanical energy, Thermal energy, Electrical energy, Chemical energy, Nuclear energy and Electromagnetic energy.
300
Define rate.
What is a value describing one quantity in terms of another quantity
300
What is the law of conservation of mass?
The law of conservation of mass states during a chemical reaction, matter can NOT be created or destroyed.
300
Why does weight change on different planets? What is the formula for weight?
Weight changes on another planet' surface because weight depend on gravity, other planet's gravities are not the same as Earth's. Weight=Mass x Gravity.
300
Name three units of measurement for volume.
What is Centimeter cubed, Millimeter cubed and milliliters cubed.
400
Define Potential and Kinetic energy.
Potential energy is energy that is saved and come from where the object is. Kinetic energy is the energy of an object in motion.
400
What is the equation for speed? A car traveling 500 miles for 5 hours, what is the average speed?
What is speed=distance/time. The car was traveling 100 miles per hour.
400
What is a physical change?
A physical change is a change that alters the appearance of form of a substance, but does NOT make it into another substance. Only the form or shape changes.
400
Why does mass never change when on a different planet? What is the formula for mass?
Mass doesn't change because it doesn't depend on gravity, the only thing that changes weight is gravity and mass is how much matter is in an object, so gravity won't affect it.
400
What are four of the five main states of matter?
What is Solid liquid gas, plasma or Bose-Einstein condensates.
500
What are Newton's first three laws of motion?
First law: AN object that isn't moving will not move and an object that is moving will stay moving at t6he same speed and direction unless an unbalanced force is acting upon it.
Second law: The acceleration of an object depends on the object's mass and the force acting on it.
Third law: If something/someone uses force on another object, that object will use the same amount of force in the opposite direction.
500
Define motion, reference point and velocity.
What is motion is an object's distance changing from another object. Reference point is a place or object used to determine if something is in motion. Velocity is speed in a given direction.
500
Define chemical change, and when do they occur?
A chemical change occurs when bonds between atoms break. A chemical change is a change in matter that produces one or more NEW substances.
500
What tools are used for measuring weight and mass? What unit of measurement is used to calculate the amount of force on an object
For finding weight, a spring scale is used. For finding mass, a triple beam balance is used. Newton is the unit used to measure force.
500
What are three main groups the periodic table is divided into? What does the atomic number mean?
What is Metals, Non-metals and Noble Gases. The atomic number is the amount of electrons and protons in an element.