Science Skills
This type of observation uses numbers and measurements.
What is a quantitative observation?
This is the first step of the scientific method, where you notice something unusual.
What is making an observation?
Convert 0.092 kilometers (km) to meters (m).
92 m
All matter is made of elements, and all elements are made of ?
What are atoms?
True or False: Chemical symbols are different depending on what country you are in.
False
A guess or explanation based on your observations.
What is an inference?
A testable explanation for an observation that can be supported or refuted by data.
What is a hypothesis?
Convert 72 centimeters (cm) to meters (m).
0.72 m
A pure substance made of only one kind of atom.
What is an element?
Mendeleev originally arranged elements by this property.
What is atomic mass?
The factor in an experiment that is purposely changed by the scientist.
What is the independent variable?
In this step, you gather information through careful testing and observation.
What is conducting an experiment?
Convert 250 milliliters (mL) to liters (L).
0.250 L
True or False? Each element has a unique atomic number.
True
The modern periodic table is arranged by this property.
What is atomic number?
The factor that responds or changes as a result of the manipulated variable.
What is the dependent variable?
After analyzing results, you state whether your hypothesis was correct or not.
What is drawing a conclusion?
A package weighs 3,500 g. What is the weight in kilograms?
3.5 kg
Most elements at room temperature are found in this phase of matter.
What is a solid?
This element is found in Period 3, Group 16
What is sulfur (S)?
A statement like “The plant is green and healthy” is this type of observation.
What is a qualitative observation?
This is the final step, where scientists share their findings with others.
What is communicating results (sharing with others)?
A snail moves 0.005 km. How many centimeters did it travel?
500 cm
The atomic number tells us this about an element.
What is the number of protons?
This element is found in Period 6, Group 2
What is barium (Ba)?