Science

Question Answer
What is and independent variable The variable being changed in the experiment
What is a dependent variable Factor that is being measured
What are control and experimental group Sample treated like the other experimental groups except the independent variable is not applied to it used for comparison (the normal groups are being treated normally)
What are constant Variables that study the same
What is a qualitative observation Observation and using the sense to describe something
What is a quantitative observation Observations that are measurable
What is an inference An explanation of information that is based on facts but not direct observations alone it uses both abs or vacations and prior knowledge
What is a hypothesis and what is the format to write a hypothesis A hypothesis is an idea that can be tested by an experiment written in if then statements
What is matter Anything that has mass and takes up space
What is an Atom Measure of the amount of matter in a solid liquid or gas
What is an element Substance containing one type of Atom
Where are the location of protons neutrons and electrons In the nucleus
What is a molecule Formed when two or more Atoms joined together
What is a compound Containing two or more elements
Where are the valence electrons in an atom in how do you determine the valence electrons number Debility electrons are on the outer ring
Be able to pick out elements from a chemical formula and count the atoms example LI3N LILIL I in lithium three nitrogen
AU Metallic
Naf Covalent
HCl Ionic
Zn and Cu mixture Metallic
F2 Ionic
The properties of metals Metallic luster shinMalleable Reactivity Good conductors
List the property of nonmetals BrittleNonductileDullBecome stable by gaining or sharing electrons
What are metalloids Properties are in between or a mixture of metals and nonmetals
What are the rows in the periodic table called Periods
What are the columns in the periodic table called Family
Family 1A is name Alkali metals
Family 2A is called Alkaline metals
Family 3A called Boron metals
Family 4A is called Carbon family
Family 5A is named Nitrogen family
Family 6A is named Oxygen family
Family 7A is named Halogen family
Family 8A is named Noble gases
The metals in the center of the periodic table are called Transition metals
The atomic number gives you the number of Protons or electrons
The atomic mass is the Protons+ neutrons
Atomic number 18
Atomic mass 36
Protons 18
Neutrons 12
Electrons 18
Protons have a blank charge Positive
Electrons have a blank charge Negative
Neutrons have blank charge No charge

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