Font size
WorksheetsChemical elements
Total questions: 19
Worksheet time: 10mins
Which one of these body functions is helped by calcium?
Helps our muscles to contract
Helps keep our nerves healthy
Helps build strong bones and teeth
All of the choices
What are some of the most common sources of calcium?
apple, pineapple
cabbage, broccoli
egg & bread
milk & ikan bilis
symbol Co
copper
coper
cobalt
symbol Cl
chlorin
clorine
chlorine
symbol B
bromine
boron
barium
beryl
berylium
berillium
beryllium
What do protons, electrons and neutrons make?
element
compound
atom
What is the smallest piece of matter that still has properties of that matter?
element
atom
proton
Negatively charged particle
proton
neutron
electron
Neutral charge particle
proton
neutron
electron
Positively charge particle
proton
neutron
electron
How many atoms of sodium (Na) are in one molecule of baking soda?
1
2
3
4
What is the chemical symbol for carbon?
C
Ca
Cn
Crn
How many atoms make up one molecule of laughing gas?
1
2
3
4
When we combined vinegar and baking soda and created carbon dioxide what was the product?
vinegar
carbon dioxide and baking soda
carbon dioxide
vinegar and baking soda
In a chemical reaction or change a new substance is not created.
true
false
If there is a rise in temperature during a chemical reaction it is called a _________________ reaction.
endothermic
exothermic
Atoms are mostly made up of...
empty space
electrons
solids and liquids
What did the second man drink?
Arsenic
Hydrogen Peroxide
Helium Oxolate
