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- 1. Multiple Choice
When 2 Hydrogen atoms and 1 Oxygen atom combines into one compound, it is now H2O. This is a single ________ of water
atom
element
drop
molecule
- 2. Multiple Choice
Everything tangible (things that can be observed by our five senses) are made up of Matter. There are two types of Matter, they are:
Metal and Non-metal
Pure Substances and Mixtures
Homogenous and Heterogenous
Atoms and Molecules
- 3. Multiple Choice
What is the most likely reason that leaves can fall slowly down to the ground in Autumn, as opposed to falling straight right down.
Falling leaves is a slow chemical change
Leaves are not Matter
Gravity does not apply to all matter in the same way
There are molecules of gas in the air under the leaves
- 4. Multiple Choice
Which of the following is a physical property of Matter?
Lustre
pH
Acidity
Toxicity
- 5. Multiple Choice
Select all of the following that are Physical Properties of Matter
Lustre
pH
Texture
Mass (Weight)
Size
- 6. Multiple Choice
What could be the reason why we have to separate recycling items based on Science?
All Mixtures are not recyclable
Mixtures need to be turned into Pure Substances (Compounds)
Heterogenous Mixtures need to be turned into Homogenous Mixtures
Homogenous Mixtures need to be turned into Heterogenous Mixtures
- 7. Multiple Choice
When water is mixed with bleach, the result is a
Chemical reaction
Solution
Suspension
Bleach doesn't mix or dissolve in water
- 8. Multiple Choice
Fog scatters light and hinders visibility, eventually it lifts. In relation to its classification as matter, fog is a(n):
Suspension
Colloid
Element
Natural phenomenon
- 9. Multiple Choice
Solids that are found in muddy lake water eventually settle to the bottom. Muddy waters are examples of:
Homogenous Mixtures
Colloids
Suspensions
Toxic Chemicals
- 10. Multiple Choice
Sugar is an example of a(n):
Heterogenous Mixture
Pure Substance
Element
Solution
- 11. Multiple Choice
pH measures what?
Whether something is acidic, neutral, or basic
How toxic a substance is
The time it should take before something is expected to rust away
How much energy will be released if a substance is burnt
- 12. Multiple Choice
When a chemical change occurs, which of the following is true?
Changes in chemical properties occur
One should notice sparks, flames, or explosions
It cannot be simply undone
- 13. Multiple Choice
When working in a laboratory, which of the following should you do? Select all that applies.
Be sure to finish first
Think about safety at all times
Dress properly for the task
Strictly follow all instructions
Be very careful
- 14. Multiple Choice
Why is it a good idea to read or hear all the instructions before you perform laboratory work?
Laboratory activities are so much fun. Humans tend to be careless when they are happy or having fun.
Laboratory activities can be very dangerous. Always know the emergency equipment around the lab.
Laboratory activities are very specific. Never assume you already know what to do.
- 15. Multiple Choice
Which of the following count as chemical changes? Select all that apply.
Cooking food
Pouring water over oil
Mixing baking soda and vinegar
Burning gasoline in a car's engine
Photosynthesis (plants making its own food)
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