chemistry
plants
Atoms
periodic table
physical science
100

create / make?

form.

100

When the seed starts to sprout?

germination. 

100

Matter that is a combination of different types of matter in different proportions?

mixture.

100

Positively charged particle in the nucleus of an atom.

protons.

100

What is a meter?

The basic unit of length

200

new substances formed in chemical reactions, after the arrow?

products.

200

An adaptation of some terrestrial plants consisting of an embryo packaged along with a store of food within a protective coat?

seed.

200

Neutral subatomic particle that is a part of the nucleus?

neutron.

200

A subatomic particle that has no charge and that is found in the nucleus of an atom?

neutrons

200

The basic unit of math is a?

mass.

300

the process, in which one or more substances change, and produce/ form one or more substances?

chemical reaction.

300

A fine dust that contains the sperm of seed-producing plants?

pollen. 

300

Positively charged subatomic particle that is a part of the nucleus?

proton.

300

Atoms with in the same group?

Have similar chemical properties.

300

Formula for density?

Density=mass/volume or d=m/v.

400

Heat, gas formation, and a change in color?

Clues to Chemical reactions.

400

Plants with special tissues to transport food and water such as trees and flowering plants?

vascular plants.

400

Negatively charged subatomic particle that circles the nucleus of an atom?

electron.

400

Boron, Silicon, Germanium, Arsenic, Antimony, Tellurium?

list of metalliods.

400

Temperature at what the water freezes?

0 degrees Celsius 

500

a change when a substance combines (+) with another substance to form a new substance?

chemical change. 

500

What is the process that plants use the sun's energy to convert water and carbon dioxide into sugars?

photosynthesis.

500

pieces of matter that make up atoms?

subatomic particle. 

500

Found along the 'staircase'. Have properties of both metals and nonmetals?

mettaliods. 

500
what is an element?

a substance that can not be broken down into simpler substances.