Energy / Mixtures
What are the three ways that energy can be transferred?
Heating Working Radiating
Positively charged subatomic particle found in the nucleus of an atom.
Proton
Define Density -
How much matter is packed into a given amount of space.
What two main gases are stars made from?
Hydrogen and Helium
What layer of Earth's interior do we stand on?
Lithosphere / Crust
Which state of matter has the most amount of particle energy?
Which state of matter has the least amount of particle energy?
1. Gas
2. Solid
Which scientist created the nuclear model of the atom? What was the key feature of the nuclear model?
Ernest Rutherford
Key feature - had a core called the nucleus.
Calculate the mass of a solid that has a density of
10 g / ml and a volume of 50 ml
Mass = 500 grams
What feature of Earth is believed to be the most important for life?
Liquid water
What causes the movement of Earth's lithosphere leading to continental drift?
Convection cells within the asthenosphere
Why is an element considered to a be a pure substance?
Cannot be broken down into any other substance / atoms.
The fifth energy shell of an atom can hold a max of _____________ electrons.
18
Calculate the volume of an object with density of
13 g / cm3 and a mass of 56 g
The further that a planet forms away from a star the more likely it will be a ___________________ planet.
Gas Giant
The Himalayan mountains were created when the Indian continent collided with the Eurasia continent.
What type of plate boundary is this an example of?
Convergent boundary
Is hand sanitizer a heterogeneous or a homogeneous mixture?
Homogeneous - hard to separate
How many elements are on the periodic table?
How is the periodic table of elements organized?
118 elements
Organized by the atomic # or the number of protons.
Calculate the density of an object that has a mass of 430 g and a volume of 4 cm3
Density = 107.5 g / cm3
Which planet has a period of revolution of 164 Earth years?
Neptune
A volcano on the east coast recently erupted 10 years ago. Recently in 2025 tremors and smoke rising from the main vent of the volcano have been recorded.
Is the volcano active, dormant, or extinct?
Dormant
Would a boiling pot of water be considered energy or a system?
The boiling pot of water would be considered a system while the stove heating the water would be considered the energy.
How many electrons are in the fourth energy level of the element: Arsenic?
Electrons: 5
Why does an element such as Mercury have a greater density than an element such as copper?
Mercury has a greater number of protons and neutrons within its nucleus compared to copper.
A distant planet is measured to be 28.38 trillion kilometers away.
What is the distance it light years?
3 light years
Describe the ozone cycle -
O3 - ozone molecule absorbs harmful UV rays (radiation).
Once this happens the O3 molecule breaks down into O2 (oxygen gas) and O (single oxygen molecule).
This singular oxygen molecule then rebind's with another O2 (oxygen gas) molecule and forms a brand new O3 (ozone molecule).
The cycle repeats continuously.