Periodic Table
Smallest unit of matter?
Atom
A testable statement or prediction is called?
Hypothesis
The “control center” of the cell?
Nucleus
Process by which plants make food?
Photosynthesis
Substances you start with in a chemical reaction?
Reactants
What number tells us protons in an atom?
Atomic number
The factor you change in an experiment?
Variable
Organelle that produces energy (powerhouse)?
Mitochondria
What is the name of the Gas that plants take in for photosynthesis?
Carbon dioxide
Substances you end with?
Products
A horizontal row in the periodic table is called?
Period
The group that does not receive treatment?
Control group
Plant cell organelle where photosynthesis happens?
Chloroplast
Molecule that stores energy from photosynthesis?
Glucose
Is burning wood a chemical or physical change?
Chemical
Which subatomic particle has no charge?
Neutron
What do scientists do to find patterns or meaning after collecting data?
Analyze the data
What structure controls what enters and leaves the cell?
Cell membrane
Green pigment that captures sunlight?
Chlorophyll
What type of reaction produces heat and light (like fire)?
Combustion
Which element is the most abundant in the universe?
Hydrogen
Why is repeating an experiment important?
To check reliability and accuracy of result
Which organelle makes proteins in the cell?
Ribosome
What two things do plants produce during photosynthesis?
Oxygen and glucose
What are two signs that a chemical reaction has happened?
Color change, temperature change, gas produced, or precipitate formed