Term
|
Definition
| a phase of matter that holds its shape and does not flow |
|
|
Term
|
Definition
| the phase from which a solid turns to a liquid by heating |
|
|
Term
|
Definition
| the amount of "stuff" and object contains |
|
|
Term
|
Definition
a phase of matter that flows and also expands or contracts
to fill any container |
|
|
Term
|
Definition
| the process at wich a liquid turns to a solid |
|
|
Term
|
Definition
| the process in which a gas turns into a liquid. |
|
|
Term
|
Definition
the process at wich
liquid-solid-gass |
|
|
Term
|
Definition
| the mass of matter per unit volume |
|
|
Term
|
Definition
| the measure of the upward force a fluid exerts on an object that is submerged |
|
|
Term
|
Definition
| a particle found in the nucleus with mass similar to the proton but with zero electric charge |
|
|
Term
|
Definition
| a particle with an electrcal charge found inside atoms but outside the nucleus |
|
|
Term
What is taking place on the flat portions of the graph?
[image] |
|
Definition
The substance is changing phases on the flat portions of the graph.
[image] |
|
|
Term
|
Definition
| the phase change from a liquid to a gas |
|
|
Term
|
Definition
| the amount of space matter takes up |
|
|
Term
|
Definition
| smallest particle of an element |
|
|
Term
|
Definition
D- dependent variable
R - responding variable
Y - y-axis
M - manipulated variable
I - independent variable
X- x-axis |
|
|
Term
Different brands of coffee were tested for taste.
What is the dependent variable? |
|
Definition
|
|
Term
Different brands of coffee were tested for taste.
What is the independent variable? |
|
Definition
|
|
Term
Different brands of coffee were tested for taste.
What are some possible control variables? |
|
Definition
amount of coffee
type of water
type of coffee maker
same person taste testing |
|
|
Term
|
Definition
| An educated testable guess. |
|
|
Term
| What is a scientific theory? |
|
Definition
| A theory supported by evidence that is widely believed by scientists but cannot be proven |
|
|
Term
| There are 20 students in the room is an example of what kind of observation? |
|
Definition
|
|
Term
| There are tall students in the room is an example of what kind of observation? |
|
Definition
|
|
Term
| What is the difference between mass and weight? |
|
Definition
| mass is how much matter something is made up of while weight depends on how much gravity there is |
|
|
Term
| What is a physical change? Give some examples. |
|
Definition
| charactersitics of matter that can be seen through direct observation such as melting point, boiling point, density, and phase of matter |
|
|
Term
| What is a chemical change? |
|
Definition
| a change that changes the substance completely and cannot be reversed such as iron rusting |
|
|
Term
| What does a graduated cylinder measure? |
|
Definition
|
|
Term
| What does a triple beam balance measure? |
|
Definition
|
|
Term
| What does a thermometer measure? |
|
Definition
| temperature of a substance |
|
|
Term
|
Definition
| Density is how much matter per unit volume a substance has. |
|
|
Term
| How do you calculate density? |
|
Definition
|
|
Term
| How does density tell you if something will float in water or not? |
|
Definition
| Water has a density of 1 g/ml. If the substance has a density lower than that, it will float. If the substance has a density higher than that, it will sink. |
|
|
Term
| What are the three particles in an atom, where are they found, and what are their charges? |
|
Definition
Proton found in the nucleus with a positive charge
Electron found in the electron cloud with a negative charge
Neutron found in the nucleus with a neutral charge |
|
|
Term
| What does the atomic number of an element tell you? |
|
Definition
| atomic number tells you how many protons there are. |
|
|
Term
| How do you find the number of electrons in an element? |
|
Definition
| The number of electrons is equal to the number of protons |
|
|
Term
| What is the atomic mass of an element? |
|
Definition
| The atomic mass is made up of the protons and neutrons which are found in the nucleus. |
|
|
Term
| How do you find the number of neutrons of an atom? |
|
Definition
| The number of neutrons is equal to the atomic mass minus the atomic number |
|
|
Term
| If the atomic mass is 12 and the atomic number is 6, what element is this and how many protons, nuetrons, and electrons are there? |
|
Definition
| The element is Carbon, there are 6 protons, 6 electrons, and 6 nuetrons. |
|
|
Term
| What are the charactersitics of metals? |
|
Definition
| shiny, good conductors, ductile, and malleable |
|
|
Term
| What are the charactersitics of non-metals? |
|
Definition
| dull, brittle, poor conductors |
|
|
Term
| What is the difference between periods and families on the periodic table? |
|
Definition
| Periods are the rows, families are the columns |
|
|
Term
| Where are the noble gases found on the periodic table and why are they significant? |
|
Definition
| The noble gases are family 18 (the last one) and they are the most stable elements (least reactive) because they have a full outer shell of electrons. |
|
|
Term
| What is the difference between an element and a compound? |
|
Definition
| An element is pure form of matter that cannot be broken down int other elements and a compound is a substance composed of more than one element that is chemically bonded together. |
|
|
Term
| What is the difference between the reactants and the products in a chemical reaction? |
|
Definition
| The reactants are the substances the chemical reaction starts with and the products are what is left after the chemical reaction. |
|
|
Term
| What is an exothermic reaction? |
|
Definition
A chemical reaction where heat (energy) is released from the reaction.
[image] |
|
|
Term
| What is an endothermic reaction? |
|
Definition
A chemical reaction where heat (energy) is absorbed from the reaction.
[image] |
|
|
Term
| What are the three phases of matter? |
|
Definition
|
|
Term
| Describe the liquid phase of matter |
|
Definition
| The particle in a liquid are packed together but can slide past eachother to move around. A liquid has a definite volume, but no definite shape. An example of a liquid is water. |
|
|
Term
| Describe the gas phase of matter. |
|
Definition
| The particles in a gas are far apart and can move freely. A gas has an indefinite volume, and an indefinite shape. An example of a gas is helium. |
|
|
Term
| Describe the solid phase of matter. |
|
Definition
| The particles in a solid are packed together and vibrate. A solid has a definite volume, and definite shape. An example of a solid is wood. |
|
|
