Atoms
An atom is the smallest particle that can be considered an _______
What is an element?
How did Mendeleev arrange the elements
atomic mass
The building block of matter
element
Acid
The factor in an experiment that will be changed
Independent variable
Thomson's model suggests that atoms have ______
What is a negative charged particles known as an electron
The horizontal row on the periodic table is called a
period
Having a definite composition with a predictable ratio is a characteristic of
compounds
Very bitter taste
base
You use your five senses to describe something (hint: part of the scientific method)
Observation
According to the modern model of an atom, what makes up most of the atom's mass
What is protons and neutrons
A vertical column is called
Group
Matter made up of two or more substances that combine without joining together chemically
Mixture
If the substance is neutral, what would the pH be?
7
Part of the experiment that serves as a basis of comparison
Control group
What does the atomic number of an element represent
Most of the elements on the periodic table are classified as
metals
A mixture where substances are not distributed evenly throughout
heterogenous mixture
If an acid is combined with a base, the result will be
Neutralization reactions (Water + Salt)
This variable is the actual data collected during the experiment
Dependent variable
3P2Br4 How many Phosphorous atoms are there in the compound
what is 6
Group 18 is known as the
Noble gases (inert gases)
The substance that does the dissolving
Solvent
They react with metals to produce hydrogen gas
acids
The process of a scientist completing multiple trials of their own experiment
repetition