Select all of the metals in this list.
hydrogen
mercury
iron
gold
Which of these is an alloy?
carbon dioxide
steel
Most elements are metals.
The Periodic Table of Elements is organized by ❌
❌ are two or more substances together.
Select all of the compounds listed below.
Carbon Dioxide
Water
Sugar
Salt
O2
H2
Which of these is a molecule of a compound?
CO2
How many atoms are in this chemical formula: 2NaHCO3?
7
12
9
Solutions are mixtures.
Sugar is an element.
Which of these statements is true for all metals?
All metals conduct heat and are lustrous.
All metals conduct electricity and heat.
Mark all choices that state characteristics of metals. (Does not have to be true for all metals).
are lustrous
can be bent without breaking
can be hammered without breaking
can not be mixed
When you add ❌ to iron, you get a chemical reaction which gives the product, rust.
Another name for rust is iron oxide.
Mark all that would be evidence of a chemical reaction.
dissolving
foaming, bubbling, fizzing
clear solution
temperature change
precipitate forms
Mark all that would be evidence of a saturated solution.
solute on the bottom
Which of these would supersaturate a solution?
cooling it
heating it
To separate a salt solution, you must use evaporation a filter( evaporation, a filter ).
The smallest amount of sugar you can have is a/an
atom
molecule
The most abundant element and the most abundant compound in the human body are
hydrogen and carbon dioxide.
oxygen and water.
