Vocabulary
Properties of Matter
Science Basics
Atomic Structure
The Periodic Table
100

Observation 

Gathering information using senses or with the aid of instruments

100

The three main states of matter: solid, liquid, and gas.

Phases of Matter

100

An observation that involves a number or a measurement.

Quantitative Observation

100

The subatomic particle with a neutral charge.

Neutron

100

How is the periodic table arranged?

by increasing atomic number

200

Inference

A logical conclusion drawn from observations, previous knowledge, and available information

200

A change in a substance that does not alter its chemical identity, such as dissolving or melting.

Physical Change

200

The variable that a scientist measures to see if it responds to changes in the independent variable.

Dependent Variable

200

Atoms of the same element that have the same number of protons but different numbers of neutrons.

Isotope

200

How many elements does the Modern Periodic Table have?

118

300

Density

The ratio of a substance's mass  to it's volume

300

Unique number that determines an element's identity, equal to the number of protons.

Atomic Number

300

4 ways to analyze, organize and present data.

Data table, bar graph, circle graph, line graph

300

What is Thomson's Atomic model generally referred as

The Plum Pudding theory

300

What are the two languages used to name all the elements in the periodic table?

English and Latin

400

A well-tested  description of one phenomenon in the natural world that often includes mathematical terms

Scientific Law

400

Baking cake, burning wood, rusting iron, photo synthesis are all examples of what?

Chemical change

400

Steps of the Scientific Process in Order.

1. Observation

2. Ask a question

3. Form a hypothesis

4. Develop an experiment

5. Analyze data and draw conclusions

400

When did Mendeleev develop his periodic table?

1870s

400

What is the element symbol, atomic number and average atomic mass of Argon?

Ar, 18, 39.9

500

Electrons that are in the highest energy level of an atom of an element

Valence Electrons

500

The kind of mixture that is uniformly blended, such as salt dissolved in water.  

Homogenous mixture

500

What are the three standard units (SI) of measuring?

Kilogram for mass

Meter for length

Second for time

500

The theory that described the atom as a solid sphere, proposed in the early 1800s.

Dalton's Atomic Theory

500

What are the 4 groups the elements are categorized in?

Nonmetals, standard metals, transition metals, Inner transition

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