Chem & Physic
Physics and chemistry are both the studies of _______ and _________.
Matter and energy
What are the three main states of matter?
Solid, liquid, and gas.
What is an atom?
The smallest particle of an element that still keeps the properties of that element.
What is the charge of a proton?
Positive
What is the charge of an electron?
Negative
Matter is defined as anything that has _______and ______.
Volume and mass
What causes one state of matter to change into anther state?
Heating and cooling.
What is an element?
The substance that contains only one kind of atom.
Name as many properties of matter as you can recall.
mass, volume, density, state of matter, viscosity, luster, color, hardness odor malleability
What is the charge of a neutron?
Neutral
What is mass?
How much stuff is inside a particular material.
Which state of matter is composed of atoms that are bound together but do not have a specific form?
What is the nucleus of and atom made of?
Protons and neutrons.
The temperature at which a liquid becomes a solid, for water that is 32F or 0C.
Which is denser -- a cube of wood or the same size cube of gold? Why?
The cube of gold is denser because the atoms in the gold are more tightly packed together, and they are more massive.
How can we measure volume?
By immersing an object in liquid.
Which state of matter is composed of atoms that are frozen in place?
The solid state.
What are electron shells?
The energy levels where the electrons orbit the atom.
When is and atom stable?
When it has all the valence electrons it needs to fill up the outer shell.
What is the boiling point?
The temperature at which a liquid becomes gas for water that is 212 F or 100 C.
Why is mass not always measured by weight?
Because objects do not have weight in space, but the have the same mass in space.
Which state of matter is composed of atoms that are freely moving about, expanding to take up as much space as is available?
The gas state.
What are valence electrons?
The electrons in the outer shell.
What is the difference between a covalent bond and an ionic bond?
Covalent bonds share electrons. Ionic bonds give and take electrons.
What do the numbers inside the box of an element on the periodic table of elements represent?
The atomic number and the atomic mass.