Classifying Matter
A small particle that is the building block of matter.
What is an atom?
The amount of matter in an object.
What is mass?
This usually happens to the atoms of a substance when thermal energy is added.
What is the atoms separate and spread out.
A change in matter in which the substances that make up the matter change into other substances with new physical and chemical properties.
What is a chemical change?
This period of elements are inert, meaning they are almost impossible to create a reaction with.
What are the noble gasses?
Anything that has mass and takes up space.
What is matter?
What is density?
This is the mass of a solution after adding 5 grams of NaCl to 100mL of H2O.
What is 105 grams?
A characteristic of matter that can be observed as it changes to a different type of matter.
What is a chemical property?
Name the three major categories of the periodic table.
What are metals, non-metals, and metalloids?
A type of substance containing atoms of two or more different elements chemically bonded together.
What is a compound?
A characteristic of matter that you can observe or measure without changing the identity of the matter.
What is a physical property?
A change in size, shape, form, or state of matter in which the matter's identity stays the same.
What is a physical change?
This is the amount of substance in a certain volume.
What is concentration?
Name the two periods on the periodic table that are most reactive; the first period has an extra electron, the second is searching for one electron.
What are Alkali Metals and Halogens?
Matter with a composition that is always the same.
What is a substance?
This state of matter is found inside stars.
This happens to the temperature of a substance as it is changing states of matter.
What is the temperature stays the same until it has completely phase changed.
Name 4 signs of a chemical change.
What is bubbles, energy change, odor change, and color change?
Name the group on the periodic table that are all radioactive?
What are the actinides?
Name 2 categories of substances and 2 categories of mixtures.
Elements and compounds. Homogeneous and Heterogenous Mixtures.
Describe solubility, and name the two parts that make up a solution.
What is the ability of one substance to dissolve in another. Solute - the substance added. Solvent - the substance that the solute is being added to.
Darcie throws 10 grams of Cesium into her 1 liter Stanley cup filled with distilled water. After the explosion, she gathers all the reacted metal (Cesium Hydroxide) and leftover water (if any). When she measures the mass of the leftover materials, it is slightly less than what she started with. Describe what happened.
What is.....Hydrogen gas was released during the explosion, so the mass of the two leftover substances is missing the very small mass of Hydrogen gas that was released??
Balance this chemical equation: Al2O3 ----> Al + O2
What is 2Al2O3 -----> 4Al + 3O2
Name the two elements that are liquid at room temperature.
What are mercury and bromine?