Define
what is chemistry
the study of matter
what is physics
a branch of science that studies how things work
fire, fuel and gas are needed to start a fire
false, heat, fuel and oxygen are needed to start a fire
which instrument is needed to measure mass
a) stopwatch
b) measuring cylinder
c) scale
c) scale
how many steps are there in the scientific method
6
what is a hypothesis
when you try to guess the outcome of an experiment
what element is this symbol: Be
Beryllium
making pancakes is a chemical change
true as a new substance is being created
oxygen is a
a) compound
b) molecule
b) molecule
the test for hydrogen is a squeaky pop when placed near a flame
a) true
b) false
a) true
the 5th step of lighting a Bunsen burner
light the flame
what is a physical change
when no new substance is created, there is only a change in shape, size or state
false, it is evaporation
which flame is hotter
a) blue
b) yellow
a) blue
what is the symbol for sodium
Na
what is an atom
the smallest particle in any material
what does immiscible mean
electrons are found within the nucleus of an atom
false, they are found outside the nucleus
this state of matter has a fixed volume, but no fixed shape
a) solid
b) liquid
c) gas
b) liquid
what are the steps of the scientific method in order
observation
question
hypothesis
experiment
results
conclusion
what is fair testing
when everything is kept the same, only one variable changed
what is diffusion
the movement of particles in gases and liquids from a high to a low concentration
if an atom contains 5 electrons, it will have 8 protons?
false, 5 protons
two of the same atom joined together
a) element
b) compound
c) molecule
c) molecule
two different atoms joined together
a) element
b) compound
c) molecule
b) compound