Matter
What is matter?
Matter is anything that has mass and takes up space.
What is the difference between Pure substance and mixture?
A pure substance is a substance that is made up of only one particle, while a mixture is made of two or more different substances mixed together.
What is the Periodic Table?
The Periodic Table is a chart that shows all the different types of elements, arranged by how they are similar or different.
What are the three main parts of an atom?
Protons (positive charge) Neutrons (no charge) Electrons (negative charge)
What is the main difference between an atom and a molecule?
The main difference between an atom and a molecule is that an atom is a single unit of an element, while a molecule is a group of two or more atoms bonded together.
What are the three main states of matter?
Solid, Liquid, Gas
What are the 2 main pure substances?
Elements and Compunds
What are groups in the periodic table?
Vertical column, where elements have similar chemical properties.
Where is the nucleus of an atom located?
The nucleus is in the center of the atom.
What is the center of an atom called?
The center is called the nucleus.
What is the difference between physical and chemical properties?
Physical properties are things we can see or measure without changing the substance, while chemical properties describe how a substance can change into something new.
What is the difference between a homogeneous and a heterogeneous mixture?
Homogeneous has the same appearance throughout (like Kool Aid), while Heterogeneous has a different appearance throughout like creal with milk.
What is an element’s atomic number?
An element's atomic number is the number of protons in the nucleus of its atom, which determines the element's identity.
What is the charge of a proton?
A proton has a positive charge.
What charge does a proton have?
A proton has a positive charge.
What is the difference between a physical change and a chemical change?
A physical change is when something changes in shape or size but stays the same, while a chemical change happens when a substance turns into something completely different.
How can you separate a mixture of salt and water?
You can separate salt from water through evaporation, as the water will evaporate leaving the salt behind.
How are elements arranged in the Periodic Table?
Elements are elements arranged in the Periodic Table by increasing atomic number and grouped into periods (rows) and groups (columns) based on similar properties.
What is the charge of an electron?
An electron has a negative charge.
What part of the atom moves around the nucleus?
The part of the atom that moves around the nucleus is the electron.
How does the modern atomic model differ from the Bohr model?
The modern atomic model says electrons move in regions of space called orbitals, not fixed paths like in the Bohr model.
What HOFBrINCI stands for?
Hydrogen Oxygen Fluorine Bromine Iodine Nitrogen Chlorine
What is the difference between metals and nonmetals on the Periodic Table?
Metals are shiny, conductive, and malleable, while nonmetals are typically dull, poor conductors, and brittle in solid forms.
What is the main difference between an atom and a molecule?
An atom is a single tiny part of an element. A molecule is made up of two or more atoms joined together.
Do neutrons have a charge?
No, neutrons do not have a charge; they are electrically neutral.