Unit 1
The variable that the scientist intentionally changes.
Independent variable
State of matter with definite volume and shape with particles that vibrate in place.
Solid
All matter is made up of ___
Atoms
A substance made up of only one type of atom.
Element
The bottom of a wave is called the ___.
Trough
When another scientist does your experiment to check for validity, we call this __.
Replication
List the metals that are attracted to a magnet.
Iron, nickel and cobalt.
How many protons are found in Gold(Au)?
79
Reacts with metals, tastes sour, and has a pH less than 7
Acid
Electromagnetic radiation is carrying what?
Energy
A system of ideas that explains many related observations (phenomena).
Scientific Theory
Conduction, Convection and Radiation
List the 3 subatomic particles that make up an atom.
Protons, neutrons and electrons.
A mixture that has the substances equally present in each sample. Can contain multiple states of matter.
Homogeneous Mixture
The Electromagnetic spectrum is in order by ___ and ___.
Wavelength and Frequency
List 2 things that Scientific theories and laws have in common.
results of many investigations, supported by a large amount of evidence, can be modified if new evident is found, widely accepted by the majority of scientists.
What is the formula to find the Density of an object.
Density= Mass/Volume
What happens as we move from left to right across a period on the periodic table?
Add one proton. Atomic number increases.
What happens to the combinations of atoms during a chemical change?
They are rearranged and form new bonds
List the Electromagnetic Spectrum from longest wavelength to shortest wavelength
Radio waves, Microwaves, Infrared, Visible Light, Ultraviolet, X-ray, Gamma ray
Sara goes swimming in a pond and notices that the water near the top is warm and the water further down is cooler. She wants to put together an experiment to test how water depth affects the temperature. What is the dependent variable in her experiment?
The temperature of the water
Heat will transfer between two objects until they reach __.
Equilibrium
Elements placed in the same group or family share ____.
similar properties.
The Law of Conservation of Mass states _____
Matter(Mass) is not created or destroyed only transformed.
List 3 ways we utilize Electromagnetic radiation to help us on Earth.
Answers may vary.