Atomic structure and Periodic table
1. Which particle of an atom is associated with the atomic number?
2. Which two particles are associated with the atomic mass?
1. Proton
2. Protons and Neutrons
When molecules in a substance are able to float freely away from each other. Solid, Liquid, or Gas?
Gas
pH 1 (strong acid, weak acid, neutral, weak base, or strong base?)
strong acid
Two oxygen atoms bonded together are an (element, compound, mixture?)
element
State one of the three tenets of the Cell Theory...
Cells are the basic unit of life.
All living things are made of one or more cells.
All cells come from pre-existing cells.
1. Which two particles are found inside the nucleus of an atom?
2. Which particle orbits outside of the nucleus of an atom?
1. Protons and Neutrons
2. Electrons
Melting describes when a __________ changes into a _________.
solid, liquid
pH 7 (Strong acid, weak acid, neutral, weak base, strong base?)
neutral
H2O (Water) is both a __________ and a ___________.
compound, pure substance
1. Plantae and Animalia are examples of which level of the Linnaean System?
2. Which one is made of cells that contain chloroplasts and cell walls?
1. Kingdom
2. Plantae
1. Elements with similar properties are found in the same _________ (vertical/up and down) on the periodic table.
1. Group
In a substance, when molecules vibrate in place but do not move. Which state of matter does this represent?
Solid
1. Is pH 13 a strong acid, weak acid, neutral, weak base, strong base?)
2. A compound must contain two or more DIFFERENT types of ______________ bonded together chemically. Example: H2O or NaCl
1. strong base
2. atoms or elements
A compound is when two or more different types of ________ bond together.
elements (or atoms)
1. What is needed to change a Scientific theory?
2. On a speed graph, a STRAIGHT line with a POSITIVE correlation shows an object moving (at a constant speed, with changing speeds, or not moving at all).
1.New evidence
2. At a constant speed
1. The smallest unit of an element where it is still considered an element is a(n) ____________.
2. The subatomic particles of an atom which have a neutral charge (no charge) are called __________.
1. atom
2. neutrons (found in the nucleus with the protons)
Heating a substance causes its molecules to ___________. Move more, Move less, or No change?
Move more
Mixing a pH 4 with a pH 10 substance will make it (strong acid, weak acid, neutral, weak base, strong base?)
neutral
1. A compound is a molecule, but a molecule isn't always a compound. True or False?
2. Lemonade made by stirring sugar and lemon juice into water is an example of both a __________ and a ___________.
2. True
3. Mixture and solution
1. State two of the three types of Non-Contact forces 2. The gravitational force between two objects depends on their masses and the ___________ between them.
1. Gravitational, Magnetic, Electrical
2. distance
1. The atomic mass consists of the number of ________ and _________ in the atom's nucleus.
2. The subatomic particles that orbit outside of the nucleus and are so small they do not contribute to the mass of the atom are called ___________.
1. protons and neutrons
2. electrons
One example of a physical property of matter that DOES NOT change regardless of the size of the sample is its _______________.
Any of the following are correct:
Density, melting or boiling point, thermal or electrical conductivity, magnetic qualities, solubility.
Mixing a pH 2 substance with a neutral substance will create a (Strong acid, weak acid, neutral, weak base, strong base?)
weak acid
1. A "solution" (such as salt water) is a type of ___________. (reminder: answer will be one of the terms in the category name)
2. A substance made of only one type of atom OR one type of compound is a _________________ . Examples: A pure gold necklace or pure water
1. Mixture (because the salt and the water can be separated physically).
2. Pure substance
1. Weather Systems in the United States generally move from _____ to _____. (Choose two: North,South,East,West)
2. The large current of air that moves across the U.S. and shifts north in the Summer and dips south in the Winter is called the _______________.
1. West to East (Example: California to Florida)
2. Jet Stream