Periodic Table (A)
Elements in the same row are referred to as?
Periods/ A Period
Elements in the same column are referred to as?
Groups/ Families
The charge of a neutron is:
Neutral
According to the pH scale, a value of 14 classifies a substance as a what?
A Base
What is an independent variable?
The variable that is changed, tested, or manipulated in an experiment.
What do elements in the same row on the periodic table have in common?
Electrons are located in the same energy level or shell.
What do elements in the same group on the periodic table have in common?
Similar Chemical Properties
The charge of a proton is ___________ and the charge of an electron is ____________.
Positive; Negative
Coca-Cola has a pH of 2. This makes Coca-Cola a(n) ______________.
Acid
What is a dependent variable?
The result or observation from the experiment after being tested.
The largest section of the Periodic Table has elements classified as ______________.
Metals
The last group on the Periodic Table (Group 18) is referred to as the ___________________.
Noble (Inert) Gases
The protons and neutrons are located in the nucleus. This makes the overall charge of the nucleus ____________.
Positive
Sour taste and turning a blue litmus indicator red are characteristics of a what?
An Acid
A student designed an experiment to test the affect of salt on the number of plants that live in water. What is the dependent variable in this experiment?
The number of plants living in the water
The "staircase" on the periodic table has elements that take on characteristics of different substances. These elements are referred to as ______________.
Metalloids
Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), and Francium (Fr) are in the same column in the periodic table. Why are these elements in the same column in the periodic table?
They have similar properties.
Iron is an element on the Periodic Table. It has an atomic number of 26. That means it also has 26 ___________ and ____________.
Protons and Electrons.
What is it called when all of the acids and bases react to form water molecules and other neutral salts?
Neutralization
What is a control group used for?
Making a comparison
True or False: Electrons are negatively charge particles that can be found within the nucleus of an atom.
False
Name the 5 Major Groups of the Periodic Table.
Alkali Metals (Group 1)
Alkaline Earth Metals (Group 2)
Transition Metals (Groups 3-12)
Halogens (Group 17)
Noble Gases (Group 18)
If an element has an Atomic Mass of 56 and an atomic number of 26. How many neutrons does this element have?
30 neutrons.
Look at the following reaction:
NaOH + water → Na+ + OH– + water
This reaction is an example of a ___________.
Base/ Basic Reaction
A metal can displaces water from 25mL to 40 mL. If the metal can weighs 15 g, what is the density?
***Remember to use the Density Triangle and correct units***
1 g/mL