Ions
What is an anion?
A negatively charged ion
What is the atomic number?
The number of protons and identity of the element
Which element is bigger Bromine or Hydrogen?
Bromine?
What is the scientific method?
A method scientists use to solve problems
What is matter?
Anything that takes up space and has mass
What is a cation ion?
A positively charged ion
What subatomics make up the nulceus?
Protons and neutrons
What is electronegativity?
How greedy an element is for electrons
What is a independent variable?
The variable you are directly manipulating
What are the 3 states of matter?
Solid, liquid, and gas
How is charged determined for an element?
By the number of valence electrons
Why was Thompson's cathode experiment important?
It discovered the existence of electrons
How many valence electrons does Carbon have?
4
The variable that changes as a result of the independent variable. It is often the variable that is being measured
When matter undergoes a phase change what is changing at the atomic level?
The motion of the atoms
Chlorine will become what type of ion with what charge?
An anion -1
What are valence electrons?
The most outer shell of electrons
Which element is more electronegative?
Sodium or chlorine
Chlorine
What is a hypothesis?
A hypothesis, often called an educated guess, is what you think is the solution to whatever problem you are trying to solve.
What is the density of a 9 m3 block of wood that has weighs 18 kg?
2 kg/m3
What type of ion will aluminum become and what charge?
Cation +3
It discovered that the atom is mostly empty space with a dense nucleus
Which element is larger Cs or Ba?
Cs
What is a control and why is it important?
A control is used as the reference point to compare your results to and it is important because it helps interpret results
Describe the conservation of matter in your own words
Matter cannot be created or destroyed