atoms& molecules
elements and compounds
Vocab
Review
Periodic table of elements
100

What do atoms consist of?

What is protons, neutrons, and electrons.

100

What are elements?

What is a substance that can not be broken down?

100

What is the basic unit of a chemical element?

What is an atom?

100

A student decides to melt two strips of copper. What would most likely happen to the copper?

What is they would behave similarly?

100

What are rows called in the periodic table?

What are periods?

200

What are molecules?

What is 2 or more atoms held together by bonds?

200

How many hydrogen atoms are in H2O?

What is 2?

200

what is a positively charged particle?

What is a proton?

200

True or false: 

if an iron sheet and iron nail were left in the rain they would both rust.

What is true?

200

What are columns called in the periodic table?

What are groups?

300

What kind of particle surrounds the nucleus?

What are electrons?

300

A student leaves 2 strips of metal in two cups of water. One rust while the other doesn’t. What is the most likely reason why?

What is they are composed of different types of atoms?

300

What is a pure substance that consist entirely of one type of atom?

What is a element?

300

How would you most likely represent a compound?

What is by it’s number of atoms?

300

At the very top of an element card, what is it called?

What is the atomic number?

400

What makes up the center of an atom?

What are protons and neutrons?

400

A student has 2 samples of iron which can both be made into wire, rust when exposed to water, and are shiny. Why?

What is they are composed of the same type of atoms?

400

what is a table that classifies elements by their physical properties; rows are called periods; columns are called groups?

What is the periodic table of elements?

400

True or false: 

  Atoms are the same for all elements.

What is false?

400

Under the name of the element on the periodic table what is it called?

What is the atomic weight?

500

What is the main difference between atoms and molecules?

What is a molecule has two or made atoms bonded together and a atoms is just one atom?

500

What are 4 examples of elements?

What is nitrogen, oxygen, carbon, and boron?

500

what are two or more atoms held together by covalent bond? 

What is a molecule?

500

How many hydrogen atoms are in NH4C2H3O2?

What is 3?

500

in between the atomic number and and name what is it called?

What is the symbol?

M
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