Periodic Table
How do you calculate protons?
what is the atomic number
What state(s) of matter do not have a definite shape ?
liquids and gas
What are the three subatomic particles?
What is protons, neutrons, and electrons.
What is the definition of Matter?
What is anything with volume and mass
What state of matter has a defined shape and volume?
solids
How do you calculate electrons?
In a neutral atom, electrons is the same as the atomic number.
In a charged ion, add or subtract the charge from the atomic number
Provide two examples of a physical changes and two examples of chemical changes
P - cutting grass, crumbling paper, melting an ice cube
C - Photosynthesis, rusting metals, burning food, baking a cake
What particle has a negative charge?
Electron
What is a pure substance?
What is matter that contains only one type of particle and has a fixed or constant structure and composition.
What is the difference between adhesion and cohesion?
Adhesion is the attraction of two different objects or fluids to each other.
Cohesion is the strength with which particles of an object or fluid attract each other
What is the name of the scientist who ordered the elements on the periodic table?
Who is Dmitri Mendeleev.
What is viscosity ?
The measure of flow or resistance in a liquid
Caused by friction between the liquid particles and the surface it is on.
High Viscosity liquids - syrup
Low Viscosity liquids - milk, water
What particle has a positive charge?
Proton
What is the difference between elements, compounds and molecules?
Elements: Made up of the same type of atom Molecules: Made up of two or more atoms
Compounds: Made up of two or more different atoms
What are the two types of mixtures? provide one example of each
Heterogeneous Mixture - salad, tacos, Italian dressing
Homogeneous mixture - gold, milk, pepsi
What makes up the atomic mass in an element?
What are the protons and neutrons of the element
Matter can be classified into two categories, what are they?!
Pure substances and mixtures
Where are the subatomic particles located in the atom?
Protons and neutrons are inside the nucleus
Electrons are orbiting around the nucleus
What is the difference between chemical and physical changes?
Physical Change - able to reverse, no new substance is formed, properties don't change
Chemical change - not able to reverse, new substance formed, New properties form, energy change may occur
What is the calculation and units used for density?
density = mass / volume
units= g/ml, g/L
How are the elements arranged on the periodic table?
What is by their atomic number
Why did the chicken cross the road?
Most creative story wins - peer tutors decide
Which subatomic particle has no mass?
What is electrons
What happens to particles when they are heated?
They increase energy, move faster
What is our next unit in Science 8?!
Earth Science