The Periodic Table
What is the atomic number of oxygen?
What is 8?
We wear these to protect our hands from chemicals.
What are gloves?
What a scientists keeps the same across every sample
What is constant?
This property can be determined by calculating mass / volume
What is density?
We use this method to separate different substances in a mixture based on their different chemical properties.
What is chromatography?
How many protons does a calcium atom have?
What is 20?
We use this to hold solutions during an experiment, but we cannot use it to measure.
What is a beaker?
What a scientist changes on purpose to test their hypothesis
What is independent variable?
This term describes how the volume changes when something is added.
What is displacement?
This effect allows us to make ice cream in the lab.
What is freezing point depression?
How many neutrons does a silicon atom have?
What is 14?
We use this to measure the precise volume of a liquid.
What is a graduated cylinder?
What a scientist measures and collects data on during their experiment
What is dependent variable?
Which material has more mass: 5 kg of feathers, or 5 kg of lead?
What is neither? They're the same
This term describes a solution that cannot fit any more solute.
What is saturated?
Columns 1 and 2 on the periodic table represent these types of elements.
What are metals?
We use this piece of equipment to determine the mass of our sample.
What is a balance?
This type of data cannot be measured using numbers (e.g. color, smell, texture)
What is qualitative data?
This state of matter allows molecules to bounce around and fill a certain space/volume
What is gas?
This is the name for a chain of monomers.
What is polymer?
This scientist first organized the periodic table.
Who is Mendeleev?
We use this piece of equipment to view objects at a high magnification.
What is a microscope?
The scientist includes these to increase precision and reduce the effect of variability between experiments
What are replicates?
This state of matter is rigid; atoms are in fixed positions.
What is a solid?
This process happens when different polymer chains link together.
What is cross-linking?