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WorksheetsStrand 1.1: Elements & Compounds - Basics and Symbols
Total questions: 82
Worksheet time: 41mins
Which tiny building block makes up everything around us?
Atom
Planet
Leaf
Drop
What is an element?
A single kind of atom
A big rock
A glass of water
A kind of animal
Which picture would best show a molecule?
Two or more atoms joined together
One big atom alone
A box of crayons
A single letter
What do we call a substance made when different kinds of atoms join together?
Compound
Element
Atom
Number
Chemical symbols are short names for elements. Why are they useful?
They are quick to write and the same everywhere
They are secret codes only adults know
They are longer than names
They change every day
The symbol Na comes from the Latin name natrium. What does Na stand for?
Sodium
Sugar
Sand
Silver
Which is a correct match of element to its chemical symbol?
Oxygen – O
Hydrogen – He
Carbon – Ca
Sodium – So
A child says, “Water is made of two kinds of atoms.” Using what you know, which statement explains this best?
Water is a compound made of hydrogen and oxygen atoms joined together.
Water is one element with only oxygen atoms.
Water is just a single atom.
Water has no atoms.
Which item is a food we eat to get nutrients from elements and compounds?
Soap
Banana
Shampoo
Toothpaste
Which product is used to clean our teeth and is made from different compounds?
Toothpaste
Juice
Rice
Shirt
Which label would you look at to find what a packaged snack is made of?
Price tag
Packaging label
Sticker picture only
Store receipt
Mineral elements help our bodies. Which drink is best for getting calcium for strong bones?
Milk
Soda
Cooking oil
Shampoo
Which item is a toiletry you use to wash your hair?
Shampoo
Bread
Bottle of juice
Notebook
You have a lunch box with a list of ingredients on the side. What should you do to check if it has nuts?
Smell the food only
Read the packaging label
Shake the box
Ask the cashier the price
A friend spills soap on a snack. What should you decide to do?
Eat it because soap is clean
Do not eat it because toiletries are not food
Rinse it quickly and eat
Hide it in the bag
Which state of matter keeps its own shape and has a fixed volume?
Solid
Liquid
Gas
Steam
Which state of matter takes the shape of its container but keeps the same volume?
Solid
Liquid
Gas
Ice
Which state of matter spreads out to fill the whole container and can be compressed easily?
Solid
Liquid
Gas
Rock
A student pours water from a tall cup into a wide bowl. What property of liquids explains why the water changes shape?
Liquids have their own shape
Liquids take the shape of the container
Liquids cannot flow
Liquids disappear when poured
Which picture would best show particles packed closely together and not moving past each other?
Solid
Liquid
Gas
Steam cloud
Which item is most like a gas because it can be squeezed into a smaller space?
Air in a balloon
Water in a cup
Ice cube
Rock
Which statement is true about solids?
They flow easily
They keep their shape
They fill the whole room
They have no volume
Which is a pure substance?
Clean water made of only water particles
A fruit salad with many pieces
A mix of sand and salt
Air with dust
Which is an impure substance?
Only gold
Only water
Salt mixed with sand
Only oxygen
Which shows planning: You want to fill a bottle without spilling. Which state of matter is best for being poured through a small opening?
Solid marbles
Liquid juice
Gas only
Blocks
You need something to blow up a birthday balloon. Which state of matter should you choose and why?
Solid, because it keeps its shape
Liquid, because it stays flat
Gas, because it spreads out to fill the balloon
Solid, because it can be squashed
A teacher asks you to sort items: a stone, milk, and air. Which plan sorts them by state of matter correctly?
Stone=liquid, Milk=gas, Air=solid
Stone=solid, Milk=liquid, Air=gas
Stone=gas, Milk=solid, Air=liquid
All are liquids
Which word means when ice turns into water?
Melting
Boiling
Freezing
Growing
What happens to water when it boils?
It turns into ice
It turns into water vapor (gas)
It turns into soil
It disappears forever
Which is a physical change that can go back to the way it was?
Burning paper
Melting chocolate and cooling it again
Rusting iron
Baking a cake
A pure substance melts at the same temperature every time. Which picture shows this idea best?
Ice cube melting at the same number on the thermometer
A crayon changing colors
A plant growing taller
A rock rolling down a hill
Which bowl has impure ice if it starts melting at warmer and cooler temperatures that change each time?
The bowl that melts at one exact number every time
The bowl that melts at different numbers on the thermometer
The bowl that never melts
The bowl that turns into steam right away
Which tool helps us know a melting point or boiling point?
Thermometer
Ruler
Paintbrush
Eraser
In an experiment, you heat two clear liquids. One boils at the same temperature each time. The other boils at different temperatures. Which one is most likely pure?
The one that boils at the same temperature
The one that changes its boiling temperature
Both are impure
Neither is pure
Which change is temporary and can be reversed easily?
Melting butter and letting it harden again
Lighting a match
Cooking an egg
Rusting a nail
Which change is a chemical change?
Ice melting into water
Paper burning to ash
Water freezing
A balloon filled with air
A reversible change can go back to how it was before. Which is reversible?
Melting chocolate and letting it harden again
Wood turning into ash
Egg cooking
Bread toasting
An irreversible change cannot go back. Which is irreversible?
Water freezing and then melting
Clay changing shape and being reshaped
Rust forming on iron
Wax melting and hardening
Which pair shows a solute and a solvent that make a solution, like in the picture with salt, water, and salt‑water?
Salt and water
Water and air
Stone and water
Oil and water
When there are more solute particles than water in a beaker, the solution is called:
Dilute
Concentrated
Frozen
Gaseous
In the diffusion experiment with a beaker of water and a drop of dye, where does the dye move after a few minutes?
It stays in one spot only.
It spreads from where there is a lot of dye to where there is less dye.
It disappears from the beaker.
It turns into a solid.
Which real‑world change uses heating to change a material in a way that cannot easily be changed back?
Ice cream melting on a warm day
Chocolate melting and then cooling
An egg cooking on a pan
Water boiling and then cooling
Which picture shows something hot that can start a fire if not handled safely?
A lit match
A glass of water
A snowball
A book
Fires need heat, air, and fuel to burn. What is this set called?
Fire Triangle
Color Wheel
Water Cycle
Food Plate
If paper is burning in a small trash can, which is the safest first step?
Tell an adult and move away
Touch the fire
Hide behind the trash can
Blow on it to make it bigger
Which tool is used to put out small fires by spraying foam, powder, or water?
Fire extinguisher
Broom
Pencil
Lunch box
Which class of fire happens when cooking oil in a pan catches fire?
Kitchen oil fire
Ice fire
Water fire
Paper snow
If your clothes catch fire, what should you do?
Stop, drop, and roll
Run fast
Wave your arms
Hide in a closet
Which is a safe emergency action when you see fire smoke at school?
Follow the teacher to the exit
Go back for toys
Open all windows and play
Stay and finish drawing
Which item should you never use on an electrical fire?
Water
A fire extinguisher made for electrical fires
Telling an adult
Calling emergency help
What number do people call to get help from firefighters (choose the emergency number used in your area)?
An emergency number like 911
Your friend’s number
A random number
No number
Which picture shows a safety sign that tells you where to go during a fire drill?
Exit sign
No littering sign
Playground sign
Stop sign
Which is the smallest unit of living things?
Cell
Leaf
Bone
Rock
A living thing made of only one cell is called what?
Multicellular
Unicellular
Tissue
Organ
Which group is made of many cells working together?
Unicellular
Multicellular
Atom
Stone
Plant and animal cells are both types of what?
Rocks
Cells
Seeds
Liquids
Which cell part is the thin outer covering that controls what goes in and out?
Cell membrane
Nucleus
Chloroplast
Vacuole
Which cell part is like the boss and tells the cell what to do?
Nucleus
Cell wall
Cytoplasm
Chlorophyll
Which cell part in plant cells holds green color to make food from sunlight?
Nucleus
Chloroplast
Cell membrane
Mitochondrion
Which is usually larger in a plant cell than in an animal cell?
Nucleus
Vacuole
Ribosome
Skin
Which structure is found in plant cells but not in animal cells?
Cell wall
Cell membrane
Nucleus
Cytoplasm
What tool helps us see very small cells by making them look bigger?
Magnifying glass
Microscope
Telescope
Binoculars
If a picture of a cell is made 10 times bigger than real life, what is this called?
Shrinking
Magnification
Melting
Floating
Which word best completes the idea: A plant is made of many cells that work together to help it live. This means the plant is _______.
unicellular
multicellular
empty
a rock
Which word means the tiny thing that gets dissolved in a liquid?
Solvent
Solute
Water
Solid
What is the solvent in a sugar-and-water drink?
Sugar
Salt
Water
Juice
Concentration tells us how much solute is in a solvent. Which glass has a higher concentration of sugar?
A glass with one spoon of sugar
A glass with three spoons of sugar
Both are the same
A glass with no sugar
Diffusion is how particles spread out from where there are many to where there are few. Which example shows diffusion in a gas?
A drop of ink spreading in water
Smell of perfume moving across a room
Ice melting into water
Sugar sinking to the bottom
A drop of food color spreads through still water without stirring. What is this movement called?
Floating
Freezing
Diffusion
Evaporation
Where do particles move during diffusion?
From low concentration to high concentration
From high concentration to low concentration
Only in circles
They do not move
Which picture best shows a concentration gradient?
Dots spread evenly everywhere
Many dots on one side and few dots on the other side
No dots at all
Only one dot in the middle
Why can you smell cookies baking from the kitchen in another room?
Sound moves the smell
Diffusion spreads smell particles through air
Light carries the smell
The smell grows bigger
In living things, oxygen moves from the air in the lungs into the blood. What process helps this happen?
Condensation
Diffusion
Boiling
Freezing
Cells use diffusion to get nutrients. Which statement is true?
Nutrients move into cells from where there are fewer to more nutrients
Nutrients move into cells from where there are more to where there are fewer nutrients
Nutrients never move
Only water can move
What is osmosis?
The movement of water through a semi‑permeable membrane from a dilute solution to a more concentrated solution
The movement of air from high to low pressure
The mixing of any two liquids evenly without a membrane
The movement of food through a pipe
Which statement best describes a semi‑permeable membrane used in osmosis (like Visking tubing)?
It lets only some tiny particles like water pass through
It lets everything pass through
It blocks water but lets large sugar go through
It is made of metal
In a simple Visking tubing experiment, sugar solution is placed inside the tubing and the tubing is put in pure water. What is most likely to happen after some time?
Water moves into the tubing and the tubing swells
Sugar moves out and the tubing becomes flat
Nothing changes
The tubing melts
Why does the Visking tubing swell in the osmosis experiment?
Water moves from where it is more to where it is less through the membrane
Air blows into the tubing
Sugar turns into water
Heat makes it bigger
Which pair shows high concentration to low concentration for water in the experiment?
Beaker water to sugar solution inside the tubing
Sugar solution inside the tubing to beaker water
From the tubing to the table
From the air to the beaker
If the Visking tubing has tiny holes that let sugar through, what would you most likely observe? Use your best reasoning.
Sugar would leak into the beaker water
More water would enter and nothing else changes
Air would enter the tubing
The membrane would stop being semi‑permeable but nothing changes
A student puts salty water in the beaker and pure water inside the Visking tubing. Predict what will happen.
Water will move out of the tubing into the salty beaker water and the tubing will shrink
Water will move into the tubing and it will swell
Nothing happens because both are water
Sugar will move into the tubing
Which item is an example of a semi‑permeable barrier like Visking tubing used in osmosis?
Cell membrane of a living cell
A metal spoon
A solid rock
A window glass
