Chemistry
The number of protons in an atom determines an element’s _______.
Atomic Number
True or False: An atom is the same size as a penny?
FALSE
Where are protons and neutrons located in the atom?
The nucleus
Solar power and winder power are both examples of ________.
Renewable Energy
When two or more atoms combine they form a _______.
Molecule
True or False: The elements are arranged in order of their atomic numbers.
TRUE
A salad is an example of what kind of mixture?
Heterogeneous Mixture
Elements are differentiated by their ______ because each element has a different number of protons.
Atomic Number
Is produced when a rise in temperature causes atoms and molecules to move faster and collide with each other.
Thermal Energy
Ice melting is an example of a _______ change.
Physical
If the atomic number of an element is 8 and the atomic mass is 17, how many neutrons are present?
9 Neutrons
______ describes everything that we can see, touch, smell or feel.
MATTER
If an atom has a charge it is called an ____.
Ion
Energy is group into two main states: ______ and _______ energy.
Potential and Kinetic
I filled a graduated cylinder with 22 ml of water and that is my V1. I placed a cube in the graduated cylinder and the water went up to 48 ml (V2). What is the volume of the cube?
26 ml
The atomic number for Iron is 26 and the atomic mass is 55.845. The chemical symbol is Fe.
How many Protons does Iron have?
How many Neutrons?
26 Protons and 30 Neutrons
In our experiment (Sunset in a Bag) when we added the sodium bicarbonate and it dissolved into the water that was an example of a _______ change.
Physical
Atoms of the same element that have a different number of neutrons are called _______.
Isotopes
A battery is an example of what form of energy?
Chemical Energy
A girl kicking a soccer ball to her teammate is using what form of energy?
Kinetic or Potential
The atomic number for NITROGEN is 7 and the atomic mass is 14.007.
How many protons? How many electrons? How many neutrons?
7 protons, 7 electrons, 7 neutrons
What is located in the middle of an atom and what two things is it formed by?
Nucleus
Protons and Neutrons
Without looking at a periodic table, what is the chemical symbol for Hydrogen and Oxygen?
H and O
_______ energy results from the flow of electric charge. Lightning is a natural example of this energy.
Electric Energy
I filled a graduated cylinder with 22 ml of water and that is my V1. I placed a cube in the graduated cylinder and the water went up to 41 ml (V2). What is the volume of the cube?
I weighed the cube on the scale and it weighs 76 grams. What is the cubes density?
Volume is 19 ml and the density is 4 g/ml.