states of matter
what is the change from solid to gas
sublimation
Is malleable a property of a metal or non-metal?
metal
An acid has a pH of below 7. True or False
True
What is an element?
a pure substance made from a certain type of atom.
Is sodium chloride a compound or a mixture?
compound
what is evaporation?
change from liquid to gas
Where are metals found in the periodic table?
on the left and centre
Is a lemon acidic or alkaline?
acidic
What is the negative particle of an atom?
electron
Is a mixture physically or chemically combined?
physically
all substances are made of particles. True or False
True
Which of these is an alloy: steel, copper, tin?
steel
The more acidic a solution the higher its pH. True or false.
false
What do electrons orbit the nucleus in?
shells
What compound is made from two hydrogen atoms and one oxygen atom?
water
What type of forces exist between gas molecules?
weak
How many electrons in the outer shell do metals in group one have?
one
Why do most metals have high melting points?
strong forces hold their atoms together
What state is mercury in at room temperature?
liquid
what compound do plants take in from the atmosphere?
Carbon Dioxide
A substance that is dissolved in a solution.
solute
Reactivity decreases going down group one. true or false
false
What increases in an atom as you go down a group?
The number of shells
Why does reactivity increase going down group one?
There are more shells and the outer electron is further from the nucleus
What is the name of the compound made from zinc and oxygen?
zinc oxide