Lab, Graphs, and Data
This lab safety item should be used immediately if chemicals splash into the eyes.
What is the eyewash station?
Anything that has mass and takes up space.
What is matter?
This positively charged particle is found in the nucleus.
What is a proton?
This type of bond forms when atoms share electrons.
What is a covalent bond?
Speed in a specific direction.
What is velocity?
This type of data uses numbers and units, such as 18.5 g or 25 mL.
What is quantitative data?
This state of matter has definite volume but takes the shape of its container.
What is a liquid?
The atomic number of an element tells the number of these particles.
What are protons?
This type of bond forms when electrons are transferred between atoms.
What is an ionic bond?
To describe an object's position, you need this starting point.
What is a reference point?
On a line graph, this variable is usually placed on the x-axis.
What is the independent variable?
Salt water is this type of mixture because it is evenly mixed throughout.
What is a homogeneous mixture?
Atoms of the same element with different numbers of neutrons.
What are isotopes?
An atom becomes a positive ion when it does this.
What is loses electrons?
Momentum depends on an object's mass and this.
What is velocity?
This lab tool is best for accurately measuring liquid volume.
What is a graduated cylinder?
The formula used to calculate density.
What is density = mass / volume?
Elements in the same group have similar properties because they have the same number of these electrons.
What are valence electrons?
The formula CaCl₂ shows that one calcium ion combines with this many chloride ions.
What is two?
A 12.0 kg cart accelerates at 2.5 m/s². The net force is this.
What is 30 N?
These repeated experiments make results more reliable and reduce the effect of random error.
What are trials?
A 54.0 g rock has a volume of 20.0 cm³. Its density is this.
What is 2.70 g/cm³?
Across a period from left to right, elements generally become less metallic and more this.
What is nonmetallic?
This type of diagram uses dots to show valence electrons around an element symbol.
What is a Lewis dot diagram?
Newton's First Law says an object changes its motion only when acted on by this kind of force.
What is an unbalanced force?